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Commit be655596 authored by Sage Weil's avatar Sage Weil
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ceph: use i_ceph_lock instead of i_lock 

We have been using i_lock to protect all kinds of data structures in the
ceph_inode_info struct, including lists of inodes that we need to iterate
over while avoiding races with inode destruction.  That requires grabbing
a reference to the inode with the list lock protected, but igrab() now
takes i_lock to check the inode flags.

Changing the list lock ordering would be a painful process.

However, using a ceph-specific i_ceph_lock in the ceph inode instead of
i_lock is a simple mechanical change and avoids the ordering constraints
imposed by igrab().
Reported-by: default avatarAmon Ott <a.ott@m-privacy.de>
Signed-off-by: default avatarSage Weil <sage@newdream.net>
parent 51703306
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Showing with 212 additions and 207 deletions
fs/ceph/addr.c
View file @ be655596
......@@ -87,7 +87,7 @@ static int ceph_set_page_dirty(struct page *page)
snapc = ceph_get_snap_context(ci->i_snap_realm->cached_context);
/* dirty the head */
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
if (ci->i_head_snapc == NULL)
ci->i_head_snapc = ceph_get_snap_context(snapc);
++ci->i_wrbuffer_ref_head;
......@@ -100,7 +100,7 @@ static int ceph_set_page_dirty(struct page *page)
ci->i_wrbuffer_ref-1, ci->i_wrbuffer_ref_head-1,
ci->i_wrbuffer_ref, ci->i_wrbuffer_ref_head,
snapc, snapc->seq, snapc->num_snaps);
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
/* now adjust page */
spin_lock_irq(&mapping->tree_lock);
......@@ -391,7 +391,7 @@ static struct ceph_snap_context *get_oldest_context(struct inode *inode,
struct ceph_snap_context *snapc = NULL;
struct ceph_cap_snap *capsnap = NULL;
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
list_for_each_entry(capsnap, &ci->i_cap_snaps, ci_item) {
dout(" cap_snap %p snapc %p has %d dirty pages\n", capsnap,
capsnap->context, capsnap->dirty_pages);
......@@ -407,7 +407,7 @@ static struct ceph_snap_context *get_oldest_context(struct inode *inode,
dout(" head snapc %p has %d dirty pages\n",
snapc, ci->i_wrbuffer_ref_head);
}
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
return snapc;
}
......
fs/ceph/caps.c
View file @ be655596
......@@ -309,7 +309,7 @@ void ceph_reservation_status(struct ceph_fs_client *fsc,
/*
* Find ceph_cap for given mds, if any.
*
* Called with i_lock held.
* Called with i_ceph_lock held.
*/
static struct ceph_cap *__get_cap_for_mds(struct ceph_inode_info *ci, int mds)
{
......@@ -332,9 +332,9 @@ struct ceph_cap *ceph_get_cap_for_mds(struct ceph_inode_info *ci, int mds)
{
struct ceph_cap *cap;
spin_lock(&ci->vfs_inode.i_lock);
spin_lock(&ci->i_ceph_lock);
cap = __get_cap_for_mds(ci, mds);
spin_unlock(&ci->vfs_inode.i_lock);
spin_unlock(&ci->i_ceph_lock);
return cap;
}
......@@ -361,15 +361,16 @@ static int __ceph_get_cap_mds(struct ceph_inode_info *ci)
int ceph_get_cap_mds(struct inode *inode)
{
struct ceph_inode_info *ci = ceph_inode(inode);
int mds;
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
mds = __ceph_get_cap_mds(ceph_inode(inode));
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
return mds;
}
/*
* Called under i_lock.
* Called under i_ceph_lock.
*/
static void __insert_cap_node(struct ceph_inode_info *ci,
struct ceph_cap *new)
......@@ -415,7 +416,7 @@ static void __cap_set_timeouts(struct ceph_mds_client *mdsc,
*
* If I_FLUSH is set, leave the inode at the front of the list.
*
* Caller holds i_lock
* Caller holds i_ceph_lock
* -> we take mdsc->cap_delay_lock
*/
static void __cap_delay_requeue(struct ceph_mds_client *mdsc,
......@@ -457,7 +458,7 @@ static void __cap_delay_requeue_front(struct ceph_mds_client *mdsc,
/*
* Cancel delayed work on cap.
*
* Caller must hold i_lock.
* Caller must hold i_ceph_lock.
*/
static void __cap_delay_cancel(struct ceph_mds_client *mdsc,
struct ceph_inode_info *ci)
......@@ -532,14 +533,14 @@ int ceph_add_cap(struct inode *inode,
wanted |= ceph_caps_for_mode(fmode);
retry:
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
cap = __get_cap_for_mds(ci, mds);
if (!cap) {
if (new_cap) {
cap = new_cap;
new_cap = NULL;
} else {
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
new_cap = get_cap(mdsc, caps_reservation);
if (new_cap == NULL)
return -ENOMEM;
......@@ -625,7 +626,7 @@ int ceph_add_cap(struct inode *inode,
if (fmode >= 0)
__ceph_get_fmode(ci, fmode);
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
wake_up_all(&ci->i_cap_wq);
return 0;
}
......@@ -792,7 +793,7 @@ int ceph_caps_revoking(struct ceph_inode_info *ci, int mask)
struct rb_node *p;
int ret = 0;
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
for (p = rb_first(&ci->i_caps); p; p = rb_next(p)) {
cap = rb_entry(p, struct ceph_cap, ci_node);
if (__cap_is_valid(cap) &&
......@@ -801,7 +802,7 @@ int ceph_caps_revoking(struct ceph_inode_info *ci, int mask)
break;
}
}
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
dout("ceph_caps_revoking %p %s = %d\n", inode,
ceph_cap_string(mask), ret);
return ret;
......@@ -855,7 +856,7 @@ int __ceph_caps_mds_wanted(struct ceph_inode_info *ci)
}
/*
* called under i_lock
* called under i_ceph_lock
*/
static int __ceph_is_any_caps(struct ceph_inode_info *ci)
{
......@@ -865,7 +866,7 @@ static int __ceph_is_any_caps(struct ceph_inode_info *ci)
/*
* Remove a cap. Take steps to deal with a racing iterate_session_caps.
*
* caller should hold i_lock.
* caller should hold i_ceph_lock.
* caller will not hold session s_mutex if called from destroy_inode.
*/
void __ceph_remove_cap(struct ceph_cap *cap)
......@@ -1028,7 +1029,7 @@ static void __queue_cap_release(struct ceph_mds_session *session,
/*
* Queue cap releases when an inode is dropped from our cache. Since
* inode is about to be destroyed, there is no need for i_lock.
* inode is about to be destroyed, there is no need for i_ceph_lock.
*/
void ceph_queue_caps_release(struct inode *inode)
{
......@@ -1049,7 +1050,7 @@ void ceph_queue_caps_release(struct inode *inode)
/*
* Send a cap msg on the given inode. Update our caps state, then
* drop i_lock and send the message.
* drop i_ceph_lock and send the message.
*
* Make note of max_size reported/requested from mds, revoked caps
* that have now been implemented.
......@@ -1061,13 +1062,13 @@ void ceph_queue_caps_release(struct inode *inode)
* Return non-zero if delayed release, or we experienced an error
* such that the caller should requeue + retry later.
*
* called with i_lock, then drops it.
* called with i_ceph_lock, then drops it.
* caller should hold snap_rwsem (read), s_mutex.
*/
static int __send_cap(struct ceph_mds_client *mdsc, struct ceph_cap *cap,
int op, int used, int want, int retain, int flushing,
unsigned *pflush_tid)
__releases(cap->ci->vfs_inode->i_lock)
__releases(cap->ci->i_ceph_lock)
{
struct ceph_inode_info *ci = cap->ci;
struct inode *inode = &ci->vfs_inode;
......@@ -1170,7 +1171,7 @@ static int __send_cap(struct ceph_mds_client *mdsc, struct ceph_cap *cap,
xattr_version = ci->i_xattrs.version;
}
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
ret = send_cap_msg(session, ceph_vino(inode).ino, cap_id,
op, keep, want, flushing, seq, flush_tid, issue_seq, mseq,
......@@ -1198,13 +1199,13 @@ static int __send_cap(struct ceph_mds_client *mdsc, struct ceph_cap *cap,
* Unless @again is true, skip cap_snaps that were already sent to
* the MDS (i.e., during this session).
*
* Called under i_lock. Takes s_mutex as needed.
* Called under i_ceph_lock. Takes s_mutex as needed.
*/
void __ceph_flush_snaps(struct ceph_inode_info *ci,
struct ceph_mds_session **psession,
int again)
__releases(ci->vfs_inode->i_lock)
__acquires(ci->vfs_inode->i_lock)
__releases(ci->i_ceph_lock)
__acquires(ci->i_ceph_lock)
{
struct inode *inode = &ci->vfs_inode;
int mds;
......@@ -1261,7 +1262,7 @@ void __ceph_flush_snaps(struct ceph_inode_info *ci,
session = NULL;
}
if (!session) {
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
mutex_lock(&mdsc->mutex);
session = __ceph_lookup_mds_session(mdsc, mds);
mutex_unlock(&mdsc->mutex);
......@@ -1275,7 +1276,7 @@ void __ceph_flush_snaps(struct ceph_inode_info *ci,
* deletion or migration. retry, and we'll
* get a better @mds value next time.
*/
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
goto retry;
}
......@@ -1285,7 +1286,7 @@ void __ceph_flush_snaps(struct ceph_inode_info *ci,
list_del_init(&capsnap->flushing_item);
list_add_tail(&capsnap->flushing_item,
&session->s_cap_snaps_flushing);
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
dout("flush_snaps %p cap_snap %p follows %lld tid %llu\n",
inode, capsnap, capsnap->follows, capsnap->flush_tid);
......@@ -1302,7 +1303,7 @@ void __ceph_flush_snaps(struct ceph_inode_info *ci,
next_follows = capsnap->follows + 1;
ceph_put_cap_snap(capsnap);
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
goto retry;
}
......@@ -1322,11 +1323,9 @@ void __ceph_flush_snaps(struct ceph_inode_info *ci,
static void ceph_flush_snaps(struct ceph_inode_info *ci)
{
struct inode *inode = &ci->vfs_inode;
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
__ceph_flush_snaps(ci, NULL, 0);
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
}
/*
......@@ -1373,7 +1372,7 @@ int __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask)
* Add dirty inode to the flushing list. Assigned a seq number so we
* can wait for caps to flush without starving.
*
* Called under i_lock.
* Called under i_ceph_lock.
*/
static int __mark_caps_flushing(struct inode *inode,
struct ceph_mds_session *session)
......@@ -1421,9 +1420,9 @@ static int try_nonblocking_invalidate(struct inode *inode)
struct ceph_inode_info *ci = ceph_inode(inode);
u32 invalidating_gen = ci->i_rdcache_gen;
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
invalidate_mapping_pages(&inode->i_data, 0, -1);
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
if (inode->i_data.nrpages == 0 &&
invalidating_gen == ci->i_rdcache_gen) {
......@@ -1470,7 +1469,7 @@ void ceph_check_caps(struct ceph_inode_info *ci, int flags,
if (mdsc->stopping)
is_delayed = 1;
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
if (ci->i_ceph_flags & CEPH_I_FLUSH)
flags |= CHECK_CAPS_FLUSH;
......@@ -1480,7 +1479,7 @@ void ceph_check_caps(struct ceph_inode_info *ci, int flags,
__ceph_flush_snaps(ci, &session, 0);
goto retry_locked;
retry:
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
retry_locked:
file_wanted = __ceph_caps_file_wanted(ci);
used = __ceph_caps_used(ci);
......@@ -1634,7 +1633,7 @@ void ceph_check_caps(struct ceph_inode_info *ci, int flags,
if (mutex_trylock(&session->s_mutex) == 0) {
dout("inverting session/ino locks on %p\n",
session);
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
if (took_snap_rwsem) {
up_read(&mdsc->snap_rwsem);
took_snap_rwsem = 0;
......@@ -1648,7 +1647,7 @@ void ceph_check_caps(struct ceph_inode_info *ci, int flags,
if (down_read_trylock(&mdsc->snap_rwsem) == 0) {
dout("inverting snap/in locks on %p\n",
inode);
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
down_read(&mdsc->snap_rwsem);
took_snap_rwsem = 1;
goto retry;
......@@ -1664,10 +1663,10 @@ void ceph_check_caps(struct ceph_inode_info *ci, int flags,
mds = cap->mds; /* remember mds, so we don't repeat */
sent++;
/* __send_cap drops i_lock */
/* __send_cap drops i_ceph_lock */
delayed += __send_cap(mdsc, cap, CEPH_CAP_OP_UPDATE, used, want,
retain, flushing, NULL);
goto retry; /* retake i_lock and restart our cap scan. */
goto retry; /* retake i_ceph_lock and restart our cap scan. */
}
/*
......@@ -1681,7 +1680,7 @@ void ceph_check_caps(struct ceph_inode_info *ci, int flags,
else if (!is_delayed || force_requeue)
__cap_delay_requeue(mdsc, ci);
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
if (queue_invalidate)
ceph_queue_invalidate(inode);
......@@ -1704,7 +1703,7 @@ static int try_flush_caps(struct inode *inode, struct ceph_mds_session *session,
int flushing = 0;
retry:
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
if (ci->i_ceph_flags & CEPH_I_NOFLUSH) {
dout("try_flush_caps skipping %p I_NOFLUSH set\n", inode);
goto out;
......@@ -1716,7 +1715,7 @@ static int try_flush_caps(struct inode *inode, struct ceph_mds_session *session,
int delayed;
if (!session) {
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
session = cap->session;
mutex_lock(&session->s_mutex);
goto retry;
......@@ -1727,18 +1726,18 @@ static int try_flush_caps(struct inode *inode, struct ceph_mds_session *session,
flushing = __mark_caps_flushing(inode, session);
/* __send_cap drops i_lock */
/* __send_cap drops i_ceph_lock */
delayed = __send_cap(mdsc, cap, CEPH_CAP_OP_FLUSH, used, want,
cap->issued | cap->implemented, flushing,
flush_tid);
if (!delayed)
goto out_unlocked;
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
__cap_delay_requeue(mdsc, ci);
}
out:
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
out_unlocked:
if (session && unlock_session)
mutex_unlock(&session->s_mutex);
......@@ -1753,7 +1752,7 @@ static int caps_are_flushed(struct inode *inode, unsigned tid)
struct ceph_inode_info *ci = ceph_inode(inode);
int i, ret = 1;
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
for (i = 0; i < CEPH_CAP_BITS; i++)
if ((ci->i_flushing_caps & (1 << i)) &&
ci->i_cap_flush_tid[i] <= tid) {
......@@ -1761,7 +1760,7 @@ static int caps_are_flushed(struct inode *inode, unsigned tid)
ret = 0;
break;
}
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
return ret;
}
......@@ -1868,10 +1867,10 @@ int ceph_write_inode(struct inode *inode, struct writeback_control *wbc)
struct ceph_mds_client *mdsc =
ceph_sb_to_client(inode->i_sb)->mdsc;
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
if (__ceph_caps_dirty(ci))
__cap_delay_requeue_front(mdsc, ci);
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
}
return err;
}
......@@ -1894,7 +1893,7 @@ static void kick_flushing_capsnaps(struct ceph_mds_client *mdsc,
struct inode *inode = &ci->vfs_inode;
struct ceph_cap *cap;
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
cap = ci->i_auth_cap;
if (cap && cap->session == session) {
dout("kick_flushing_caps %p cap %p capsnap %p\n", inode,
......@@ -1904,7 +1903,7 @@ static void kick_flushing_capsnaps(struct ceph_mds_client *mdsc,
pr_err("%p auth cap %p not mds%d ???\n", inode,
cap, session->s_mds);
}
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
}
}
......@@ -1921,7 +1920,7 @@ void ceph_kick_flushing_caps(struct ceph_mds_client *mdsc,
struct ceph_cap *cap;
int delayed = 0;
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
cap = ci->i_auth_cap;
if (cap && cap->session == session) {
dout("kick_flushing_caps %p cap %p %s\n", inode,
......@@ -1932,14 +1931,14 @@ void ceph_kick_flushing_caps(struct ceph_mds_client *mdsc,
cap->issued | cap->implemented,
ci->i_flushing_caps, NULL);
if (delayed) {
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
__cap_delay_requeue(mdsc, ci);
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
}
} else {
pr_err("%p auth cap %p not mds%d ???\n", inode,
cap, session->s_mds);
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
}
}
}
......@@ -1952,7 +1951,7 @@ static void kick_flushing_inode_caps(struct ceph_mds_client *mdsc,
struct ceph_cap *cap;
int delayed = 0;
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
cap = ci->i_auth_cap;
dout("kick_flushing_inode_caps %p flushing %s flush_seq %lld\n", inode,
ceph_cap_string(ci->i_flushing_caps), ci->i_cap_flush_seq);
......@@ -1964,12 +1963,12 @@ static void kick_flushing_inode_caps(struct ceph_mds_client *mdsc,
cap->issued | cap->implemented,
ci->i_flushing_caps, NULL);
if (delayed) {
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
__cap_delay_requeue(mdsc, ci);
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
}
} else {
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
}
}
......@@ -1978,7 +1977,7 @@ static void kick_flushing_inode_caps(struct ceph_mds_client *mdsc,
* Take references to capabilities we hold, so that we don't release
* them to the MDS prematurely.
*
* Protected by i_lock.
* Protected by i_ceph_lock.
*/
static void __take_cap_refs(struct ceph_inode_info *ci, int got)
{
......@@ -2016,7 +2015,7 @@ static int try_get_cap_refs(struct ceph_inode_info *ci, int need, int want,
dout("get_cap_refs %p need %s want %s\n", inode,
ceph_cap_string(need), ceph_cap_string(want));
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
/* make sure file is actually open */
file_wanted = __ceph_caps_file_wanted(ci);
......@@ -2077,7 +2076,7 @@ static int try_get_cap_refs(struct ceph_inode_info *ci, int need, int want,
ceph_cap_string(have), ceph_cap_string(need));
}
out:
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
dout("get_cap_refs %p ret %d got %s\n", inode,
ret, ceph_cap_string(*got));
return ret;
......@@ -2094,7 +2093,7 @@ static void check_max_size(struct inode *inode, loff_t endoff)
int check = 0;
/* do we need to explicitly request a larger max_size? */
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
if ((endoff >= ci->i_max_size ||
endoff > (inode->i_size << 1)) &&
endoff > ci->i_wanted_max_size) {
......@@ -2103,7 +2102,7 @@ static void check_max_size(struct inode *inode, loff_t endoff)
ci->i_wanted_max_size = endoff;
check = 1;
}
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
if (check)
ceph_check_caps(ci, CHECK_CAPS_AUTHONLY, NULL);
}
......@@ -2140,9 +2139,9 @@ int ceph_get_caps(struct ceph_inode_info *ci, int need, int want, int *got,
*/
void ceph_get_cap_refs(struct ceph_inode_info *ci, int caps)
{
spin_lock(&ci->vfs_inode.i_lock);
spin_lock(&ci->i_ceph_lock);
__take_cap_refs(ci, caps);
spin_unlock(&ci->vfs_inode.i_lock);
spin_unlock(&ci->i_ceph_lock);
}
/*
......@@ -2160,7 +2159,7 @@ void ceph_put_cap_refs(struct ceph_inode_info *ci, int had)
int last = 0, put = 0, flushsnaps = 0, wake = 0;
struct ceph_cap_snap *capsnap;
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
if (had & CEPH_CAP_PIN)
--ci->i_pin_ref;
if (had & CEPH_CAP_FILE_RD)
......@@ -2193,7 +2192,7 @@ void ceph_put_cap_refs(struct ceph_inode_info *ci, int had)
}
}
}
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
dout("put_cap_refs %p had %s%s%s\n", inode, ceph_cap_string(had),
last ? " last" : "", put ? " put" : "");
......@@ -2225,7 +2224,7 @@ void ceph_put_wrbuffer_cap_refs(struct ceph_inode_info *ci, int nr,
int found = 0;
struct ceph_cap_snap *capsnap = NULL;
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
ci->i_wrbuffer_ref -= nr;
last = !ci->i_wrbuffer_ref;
......@@ -2274,7 +2273,7 @@ void ceph_put_wrbuffer_cap_refs(struct ceph_inode_info *ci, int nr,
}
}
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
if (last) {
ceph_check_caps(ci, CHECK_CAPS_AUTHONLY, NULL);
......@@ -2291,7 +2290,7 @@ void ceph_put_wrbuffer_cap_refs(struct ceph_inode_info *ci, int nr,
* Handle a cap GRANT message from the MDS. (Note that a GRANT may
* actually be a revocation if it specifies a smaller cap set.)
*
* caller holds s_mutex and i_lock, we drop both.
* caller holds s_mutex and i_ceph_lock, we drop both.
*
* return value:
* 0 - ok
......@@ -2302,7 +2301,7 @@ static void handle_cap_grant(struct inode *inode, struct ceph_mds_caps *grant,
struct ceph_mds_session *session,
struct ceph_cap *cap,
struct ceph_buffer *xattr_buf)
__releases(inode->i_lock)
__releases(ci->i_ceph_lock)
{
struct ceph_inode_info *ci = ceph_inode(inode);
int mds = session->s_mds;
......@@ -2453,7 +2452,7 @@ static void handle_cap_grant(struct inode *inode, struct ceph_mds_caps *grant,
}
BUG_ON(cap->issued & ~cap->implemented);
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
if (writeback)
/*
* queue inode for writeback: we can't actually call
......@@ -2483,7 +2482,7 @@ static void handle_cap_flush_ack(struct inode *inode, u64 flush_tid,
struct ceph_mds_caps *m,
struct ceph_mds_session *session,
struct ceph_cap *cap)
__releases(inode->i_lock)
__releases(ci->i_ceph_lock)
{
struct ceph_inode_info *ci = ceph_inode(inode);
struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc;
......@@ -2539,7 +2538,7 @@ static void handle_cap_flush_ack(struct inode *inode, u64 flush_tid,
wake_up_all(&ci->i_cap_wq);
out:
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
if (drop)
iput(inode);
}
......@@ -2562,7 +2561,7 @@ static void handle_cap_flushsnap_ack(struct inode *inode, u64 flush_tid,
dout("handle_cap_flushsnap_ack inode %p ci %p mds%d follows %lld\n",
inode, ci, session->s_mds, follows);
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
list_for_each_entry(capsnap, &ci->i_cap_snaps, ci_item) {
if (capsnap->follows == follows) {
if (capsnap->flush_tid != flush_tid) {
......@@ -2585,7 +2584,7 @@ static void handle_cap_flushsnap_ack(struct inode *inode, u64 flush_tid,
capsnap, capsnap->follows);
}
}
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
if (drop)
iput(inode);
}
......@@ -2598,7 +2597,7 @@ static void handle_cap_flushsnap_ack(struct inode *inode, u64 flush_tid,
static void handle_cap_trunc(struct inode *inode,
struct ceph_mds_caps *trunc,
struct ceph_mds_session *session)
__releases(inode->i_lock)
__releases(ci->i_ceph_lock)
{
struct ceph_inode_info *ci = ceph_inode(inode);
int mds = session->s_mds;
......@@ -2617,7 +2616,7 @@ static void handle_cap_trunc(struct inode *inode,
inode, mds, seq, truncate_size, truncate_seq);
queue_trunc = ceph_fill_file_size(inode, issued,
truncate_seq, truncate_size, size);
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
if (queue_trunc)
ceph_queue_vmtruncate(inode);
......@@ -2646,7 +2645,7 @@ static void handle_cap_export(struct inode *inode, struct ceph_mds_caps *ex,
dout("handle_cap_export inode %p ci %p mds%d mseq %d\n",
inode, ci, mds, mseq);
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
/* make sure we haven't seen a higher mseq */
for (p = rb_first(&ci->i_caps); p; p = rb_next(p)) {
......@@ -2690,7 +2689,7 @@ static void handle_cap_export(struct inode *inode, struct ceph_mds_caps *ex,
}
/* else, we already released it */
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
}
/*
......@@ -2745,9 +2744,9 @@ static void handle_cap_import(struct ceph_mds_client *mdsc,
up_read(&mdsc->snap_rwsem);
/* make sure we re-request max_size, if necessary */
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
ci->i_requested_max_size = 0;
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
}
/*
......@@ -2762,6 +2761,7 @@ void ceph_handle_caps(struct ceph_mds_session *session,
struct ceph_mds_client *mdsc = session->s_mdsc;
struct super_block *sb = mdsc->fsc->sb;
struct inode *inode;
struct ceph_inode_info *ci;
struct ceph_cap *cap;
struct ceph_mds_caps *h;
int mds = session->s_mds;
......@@ -2815,6 +2815,7 @@ void ceph_handle_caps(struct ceph_mds_session *session,
/* lookup ino */
inode = ceph_find_inode(sb, vino);
ci = ceph_inode(inode);
dout(" op %s ino %llx.%llx inode %p\n", ceph_cap_op_name(op), vino.ino,
vino.snap, inode);
if (!inode) {
......@@ -2844,16 +2845,16 @@ void ceph_handle_caps(struct ceph_mds_session *session,
}
/* the rest require a cap */
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
cap = __get_cap_for_mds(ceph_inode(inode), mds);
if (!cap) {
dout(" no cap on %p ino %llx.%llx from mds%d\n",
inode, ceph_ino(inode), ceph_snap(inode), mds);
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
goto flush_cap_releases;
}
/* note that each of these drops i_lock for us */
/* note that each of these drops i_ceph_lock for us */
switch (op) {
case CEPH_CAP_OP_REVOKE:
case CEPH_CAP_OP_GRANT:
......@@ -2869,7 +2870,7 @@ void ceph_handle_caps(struct ceph_mds_session *session,
break;
default:
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
pr_err("ceph_handle_caps: unknown cap op %d %s\n", op,
ceph_cap_op_name(op));
}
......@@ -2962,13 +2963,13 @@ void ceph_put_fmode(struct ceph_inode_info *ci, int fmode)
struct inode *inode = &ci->vfs_inode;
int last = 0;
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
dout("put_fmode %p fmode %d %d -> %d\n", inode, fmode,
ci->i_nr_by_mode[fmode], ci->i_nr_by_mode[fmode]-1);
BUG_ON(ci->i_nr_by_mode[fmode] == 0);
if (--ci->i_nr_by_mode[fmode] == 0)
last++;
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
if (last && ci->i_vino.snap == CEPH_NOSNAP)
ceph_check_caps(ci, 0, NULL);
......@@ -2991,7 +2992,7 @@ int ceph_encode_inode_release(void **p, struct inode *inode,
int used, dirty;
int ret = 0;
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
used = __ceph_caps_used(ci);
dirty = __ceph_caps_dirty(ci);
......@@ -3046,7 +3047,7 @@ int ceph_encode_inode_release(void **p, struct inode *inode,
inode, cap, ceph_cap_string(cap->issued));
}
}
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
return ret;
}
......@@ -3061,7 +3062,7 @@ int ceph_encode_dentry_release(void **p, struct dentry *dentry,
/*
* force an record for the directory caps if we have a dentry lease.
* this is racy (can't take i_lock and d_lock together), but it
* this is racy (can't take i_ceph_lock and d_lock together), but it
* doesn't have to be perfect; the mds will revoke anything we don't
* release.
*/
......
fs/ceph/dir.c
View file @ be655596
......@@ -281,18 +281,18 @@ static int ceph_readdir(struct file *filp, void *dirent, filldir_t filldir)
}
/* can we use the dcache? */
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
if ((filp->f_pos == 2 || fi->dentry) &&
!ceph_test_mount_opt(fsc, NOASYNCREADDIR) &&
ceph_snap(inode) != CEPH_SNAPDIR &&
ceph_dir_test_complete(inode) &&
__ceph_caps_issued_mask(ci, CEPH_CAP_FILE_SHARED, 1)) {
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
err = __dcache_readdir(filp, dirent, filldir);
if (err != -EAGAIN)
return err;
} else {
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
}
if (fi->dentry) {
err = note_last_dentry(fi, fi->dentry->d_name.name,
......@@ -428,12 +428,12 @@ static int ceph_readdir(struct file *filp, void *dirent, filldir_t filldir)
* were released during the whole readdir, and we should have
* the complete dir contents in our cache.
*/
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
if (ci->i_release_count == fi->dir_release_count) {
ceph_dir_set_complete(inode);
ci->i_max_offset = filp->f_pos;
}
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
dout("readdir %p filp %p done.\n", inode, filp);
return 0;
......@@ -607,7 +607,7 @@ static struct dentry *ceph_lookup(struct inode *dir, struct dentry *dentry,
struct ceph_inode_info *ci = ceph_inode(dir);
struct ceph_dentry_info *di = ceph_dentry(dentry);
spin_lock(&dir->i_lock);
spin_lock(&ci->i_ceph_lock);
dout(" dir %p flags are %d\n", dir, ci->i_ceph_flags);
if (strncmp(dentry->d_name.name,
fsc->mount_options->snapdir_name,
......@@ -615,13 +615,13 @@ static struct dentry *ceph_lookup(struct inode *dir, struct dentry *dentry,
!is_root_ceph_dentry(dir, dentry) &&
ceph_dir_test_complete(dir) &&
(__ceph_caps_issued_mask(ci, CEPH_CAP_FILE_SHARED, 1))) {
spin_unlock(&dir->i_lock);
spin_unlock(&ci->i_ceph_lock);
dout(" dir %p complete, -ENOENT\n", dir);
d_add(dentry, NULL);
di->lease_shared_gen = ci->i_shared_gen;
return NULL;
}
spin_unlock(&dir->i_lock);
spin_unlock(&ci->i_ceph_lock);
}
op = ceph_snap(dir) == CEPH_SNAPDIR ?
......@@ -841,12 +841,12 @@ static int drop_caps_for_unlink(struct inode *inode)
struct ceph_inode_info *ci = ceph_inode(inode);
int drop = CEPH_CAP_LINK_SHARED | CEPH_CAP_LINK_EXCL;
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
if (inode->i_nlink == 1) {
drop |= ~(__ceph_caps_wanted(ci) | CEPH_CAP_PIN);
ci->i_ceph_flags |= CEPH_I_NODELAY;
}
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
return drop;
}
......@@ -1015,10 +1015,10 @@ static int dir_lease_is_valid(struct inode *dir, struct dentry *dentry)
struct ceph_dentry_info *di = ceph_dentry(dentry);
int valid = 0;
spin_lock(&dir->i_lock);
spin_lock(&ci->i_ceph_lock);
if (ci->i_shared_gen == di->lease_shared_gen)
valid = __ceph_caps_issued_mask(ci, CEPH_CAP_FILE_SHARED, 1);
spin_unlock(&dir->i_lock);
spin_unlock(&ci->i_ceph_lock);
dout("dir_lease_is_valid dir %p v%u dentry %p v%u = %d\n",
dir, (unsigned)ci->i_shared_gen, dentry,
(unsigned)di->lease_shared_gen, valid);
......
fs/ceph/file.c
View file @ be655596
......@@ -147,9 +147,9 @@ int ceph_open(struct inode *inode, struct file *file)
/* trivially open snapdir */
if (ceph_snap(inode) == CEPH_SNAPDIR) {
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
__ceph_get_fmode(ci, fmode);
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
return ceph_init_file(inode, file, fmode);
}
......@@ -158,7 +158,7 @@ int ceph_open(struct inode *inode, struct file *file)
* write) or any MDS (for read). Update wanted set
* asynchronously.
*/
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
if (__ceph_is_any_real_caps(ci) &&
(((fmode & CEPH_FILE_MODE_WR) == 0) || ci->i_auth_cap)) {
int mds_wanted = __ceph_caps_mds_wanted(ci);
......@@ -168,7 +168,7 @@ int ceph_open(struct inode *inode, struct file *file)
inode, fmode, ceph_cap_string(wanted),
ceph_cap_string(issued));
__ceph_get_fmode(ci, fmode);
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
/* adjust wanted? */
if ((issued & wanted) != wanted &&
......@@ -180,10 +180,10 @@ int ceph_open(struct inode *inode, struct file *file)
} else if (ceph_snap(inode) != CEPH_NOSNAP &&
(ci->i_snap_caps & wanted) == wanted) {
__ceph_get_fmode(ci, fmode);
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
return ceph_init_file(inode, file, fmode);
}
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
dout("open fmode %d wants %s\n", fmode, ceph_cap_string(wanted));
req = prepare_open_request(inode->i_sb, flags, 0);
......@@ -743,9 +743,9 @@ static ssize_t ceph_aio_write(struct kiocb *iocb, const struct iovec *iov,
*/
int dirty;
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
dirty = __ceph_mark_dirty_caps(ci, CEPH_CAP_FILE_WR);
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
ceph_put_cap_refs(ci, got);
ret = generic_file_aio_write(iocb, iov, nr_segs, pos);
......@@ -764,9 +764,9 @@ static ssize_t ceph_aio_write(struct kiocb *iocb, const struct iovec *iov,
if (ret >= 0) {
int dirty;
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
dirty = __ceph_mark_dirty_caps(ci, CEPH_CAP_FILE_WR);
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
if (dirty)
__mark_inode_dirty(inode, dirty);
}
......
fs/ceph/inode.c
View file @ be655596
......@@ -297,6 +297,8 @@ struct inode *ceph_alloc_inode(struct super_block *sb)
dout("alloc_inode %p\n", &ci->vfs_inode);
spin_lock_init(&ci->i_ceph_lock);
ci->i_version = 0;
ci->i_time_warp_seq = 0;
ci->i_ceph_flags = 0;
......@@ -583,7 +585,7 @@ static int fill_inode(struct inode *inode,
iinfo->xattr_len);
}
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
/*
* provided version will be odd if inode value is projected,
......@@ -680,7 +682,7 @@ static int fill_inode(struct inode *inode,
char *sym;
BUG_ON(symlen != inode->i_size);
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
err = -ENOMEM;
sym = kmalloc(symlen+1, GFP_NOFS);
......@@ -689,7 +691,7 @@ static int fill_inode(struct inode *inode,
memcpy(sym, iinfo->symlink, symlen);
sym[symlen] = 0;
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
if (!ci->i_symlink)
ci->i_symlink = sym;
else
......@@ -715,7 +717,7 @@ static int fill_inode(struct inode *inode,
}
no_change:
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
/* queue truncate if we saw i_size decrease */
if (queue_trunc)
......@@ -750,13 +752,13 @@ static int fill_inode(struct inode *inode,
info->cap.flags,
caps_reservation);
} else {
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
dout(" %p got snap_caps %s\n", inode,
ceph_cap_string(le32_to_cpu(info->cap.caps)));
ci->i_snap_caps |= le32_to_cpu(info->cap.caps);
if (cap_fmode >= 0)
__ceph_get_fmode(ci, cap_fmode);
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
}
} else if (cap_fmode >= 0) {
pr_warning("mds issued no caps on %llx.%llx\n",
......@@ -849,19 +851,20 @@ static void ceph_set_dentry_offset(struct dentry *dn)
{
struct dentry *dir = dn->d_parent;
struct inode *inode = dir->d_inode;
struct ceph_inode_info *ci = ceph_inode(inode);
struct ceph_dentry_info *di;
BUG_ON(!inode);
di = ceph_dentry(dn);
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
if (!ceph_dir_test_complete(inode)) {
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
return;
}
di->offset = ceph_inode(inode)->i_max_offset++;
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
spin_lock(&dir->d_lock);
spin_lock_nested(&dn->d_lock, DENTRY_D_LOCK_NESTED);
......@@ -1308,7 +1311,7 @@ int ceph_inode_set_size(struct inode *inode, loff_t size)
struct ceph_inode_info *ci = ceph_inode(inode);
int ret = 0;
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
dout("set_size %p %llu -> %llu\n", inode, inode->i_size, size);
inode->i_size = size;
inode->i_blocks = (size + (1 << 9) - 1) >> 9;
......@@ -1318,7 +1321,7 @@ int ceph_inode_set_size(struct inode *inode, loff_t size)
(ci->i_reported_size << 1) < ci->i_max_size)
ret = 1;
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
return ret;
}
......@@ -1376,20 +1379,20 @@ static void ceph_invalidate_work(struct work_struct *work)
u32 orig_gen;
int check = 0;
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
dout("invalidate_pages %p gen %d revoking %d\n", inode,
ci->i_rdcache_gen, ci->i_rdcache_revoking);
if (ci->i_rdcache_revoking != ci->i_rdcache_gen) {
/* nevermind! */
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
goto out;
}
orig_gen = ci->i_rdcache_gen;
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
truncate_inode_pages(&inode->i_data, 0);
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
if (orig_gen == ci->i_rdcache_gen &&
orig_gen == ci->i_rdcache_revoking) {
dout("invalidate_pages %p gen %d successful\n", inode,
......@@ -1401,7 +1404,7 @@ static void ceph_invalidate_work(struct work_struct *work)
inode, orig_gen, ci->i_rdcache_gen,
ci->i_rdcache_revoking);
}
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
if (check)
ceph_check_caps(ci, 0, NULL);
......@@ -1460,10 +1463,10 @@ void __ceph_do_pending_vmtruncate(struct inode *inode)
int wrbuffer_refs, wake = 0;
retry:
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
if (ci->i_truncate_pending == 0) {
dout("__do_pending_vmtruncate %p none pending\n", inode);
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
return;
}
......@@ -1474,7 +1477,7 @@ void __ceph_do_pending_vmtruncate(struct inode *inode)
if (ci->i_wrbuffer_ref_head < ci->i_wrbuffer_ref) {
dout("__do_pending_vmtruncate %p flushing snaps first\n",
inode);
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
filemap_write_and_wait_range(&inode->i_data, 0,
inode->i_sb->s_maxbytes);
goto retry;
......@@ -1484,15 +1487,15 @@ void __ceph_do_pending_vmtruncate(struct inode *inode)
wrbuffer_refs = ci->i_wrbuffer_ref;
dout("__do_pending_vmtruncate %p (%d) to %lld\n", inode,
ci->i_truncate_pending, to);
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
truncate_inode_pages(inode->i_mapping, to);
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
ci->i_truncate_pending--;
if (ci->i_truncate_pending == 0)
wake = 1;
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
if (wrbuffer_refs == 0)
ceph_check_caps(ci, CHECK_CAPS_AUTHONLY, NULL);
......@@ -1547,7 +1550,7 @@ int ceph_setattr(struct dentry *dentry, struct iattr *attr)
if (IS_ERR(req))
return PTR_ERR(req);
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
issued = __ceph_caps_issued(ci, NULL);
dout("setattr %p issued %s\n", inode, ceph_cap_string(issued));
......@@ -1695,7 +1698,7 @@ int ceph_setattr(struct dentry *dentry, struct iattr *attr)
}
release &= issued;
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
if (inode_dirty_flags)
__mark_inode_dirty(inode, inode_dirty_flags);
......@@ -1717,7 +1720,7 @@ int ceph_setattr(struct dentry *dentry, struct iattr *attr)
__ceph_do_pending_vmtruncate(inode);
return err;
out:
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
ceph_mdsc_put_request(req);
return err;
}
......
fs/ceph/ioctl.c
View file @ be655596
......@@ -241,11 +241,11 @@ static long ceph_ioctl_lazyio(struct file *file)
struct ceph_inode_info *ci = ceph_inode(inode);
if ((fi->fmode & CEPH_FILE_MODE_LAZY) == 0) {
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
ci->i_nr_by_mode[fi->fmode]--;
fi->fmode |= CEPH_FILE_MODE_LAZY;
ci->i_nr_by_mode[fi->fmode]++;
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
dout("ioctl_layzio: file %p marked lazy\n", file);
ceph_check_caps(ci, 0, NULL);
......
fs/ceph/mds_client.c
View file @ be655596
......@@ -732,21 +732,21 @@ static int __choose_mds(struct ceph_mds_client *mdsc,
}
}
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
cap = NULL;
if (mode == USE_AUTH_MDS)
cap = ci->i_auth_cap;
if (!cap && !RB_EMPTY_ROOT(&ci->i_caps))
cap = rb_entry(rb_first(&ci->i_caps), struct ceph_cap, ci_node);
if (!cap) {
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
goto random;
}
mds = cap->session->s_mds;
dout("choose_mds %p %llx.%llx mds%d (%scap %p)\n",
inode, ceph_vinop(inode), mds,
cap == ci->i_auth_cap ? "auth " : "", cap);
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
return mds;
random:
......@@ -951,7 +951,7 @@ static int remove_session_caps_cb(struct inode *inode, struct ceph_cap *cap,
dout("removing cap %p, ci is %p, inode is %p\n",
cap, ci, &ci->vfs_inode);
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
__ceph_remove_cap(cap);
if (!__ceph_is_any_real_caps(ci)) {
struct ceph_mds_client *mdsc =
......@@ -984,7 +984,7 @@ static int remove_session_caps_cb(struct inode *inode, struct ceph_cap *cap,
}
spin_unlock(&mdsc->cap_dirty_lock);
}
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
while (drop--)
iput(inode);
return 0;
......@@ -1015,10 +1015,10 @@ static int wake_up_session_cb(struct inode *inode, struct ceph_cap *cap,
wake_up_all(&ci->i_cap_wq);
if (arg) {
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
ci->i_wanted_max_size = 0;
ci->i_requested_max_size = 0;
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
}
return 0;
}
......@@ -1151,7 +1151,7 @@ static int trim_caps_cb(struct inode *inode, struct ceph_cap *cap, void *arg)
if (session->s_trim_caps <= 0)
return -1;
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
mine = cap->issued | cap->implemented;
used = __ceph_caps_used(ci);
oissued = __ceph_caps_issued_other(ci, cap);
......@@ -1170,7 +1170,7 @@ static int trim_caps_cb(struct inode *inode, struct ceph_cap *cap, void *arg)
__ceph_remove_cap(cap);
} else {
/* try to drop referring dentries */
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
d_prune_aliases(inode);
dout("trim_caps_cb %p cap %p pruned, count now %d\n",
inode, cap, atomic_read(&inode->i_count));
......@@ -1178,7 +1178,7 @@ static int trim_caps_cb(struct inode *inode, struct ceph_cap *cap, void *arg)
}
out:
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
return 0;
}
......@@ -1296,7 +1296,7 @@ static int check_cap_flush(struct ceph_mds_client *mdsc, u64 want_flush_seq)
i_flushing_item);
struct inode *inode = &ci->vfs_inode;
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
if (ci->i_cap_flush_seq <= want_flush_seq) {
dout("check_cap_flush still flushing %p "
"seq %lld <= %lld to mds%d\n", inode,
......@@ -1304,7 +1304,7 @@ static int check_cap_flush(struct ceph_mds_client *mdsc, u64 want_flush_seq)
session->s_mds);
ret = 0;
}
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
}
mutex_unlock(&session->s_mutex);
ceph_put_mds_session(session);
......@@ -2011,10 +2011,10 @@ void ceph_invalidate_dir_request(struct ceph_mds_request *req)
struct ceph_inode_info *ci = ceph_inode(inode);
dout("invalidate_dir_request %p (D_COMPLETE, lease(s))\n", inode);
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
ceph_dir_clear_complete(inode);
ci->i_release_count++;
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
if (req->r_dentry)
ceph_invalidate_dentry_lease(req->r_dentry);
......@@ -2422,7 +2422,7 @@ static int encode_caps_cb(struct inode *inode, struct ceph_cap *cap,
if (err)
goto out_free;
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
cap->seq = 0; /* reset cap seq */
cap->issue_seq = 0; /* and issue_seq */
......@@ -2445,7 +2445,7 @@ static int encode_caps_cb(struct inode *inode, struct ceph_cap *cap,
rec.v1.pathbase = cpu_to_le64(pathbase);
reclen = sizeof(rec.v1);
}
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
if (recon_state->flock) {
int num_fcntl_locks, num_flock_locks;
......
fs/ceph/mds_client.h
View file @ be655596
......@@ -20,7 +20,7 @@
*
* mdsc->snap_rwsem
*
* inode->i_lock
* ci->i_ceph_lock
* mdsc->snap_flush_lock
* mdsc->cap_delay_lock
*
......
fs/ceph/snap.c
View file @ be655596
......@@ -446,7 +446,7 @@ void ceph_queue_cap_snap(struct ceph_inode_info *ci)
return;
}
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
used = __ceph_caps_used(ci);
dirty = __ceph_caps_dirty(ci);
......@@ -528,7 +528,7 @@ void ceph_queue_cap_snap(struct ceph_inode_info *ci)
kfree(capsnap);
}
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
}
/*
......@@ -537,7 +537,7 @@ void ceph_queue_cap_snap(struct ceph_inode_info *ci)
*
* If capsnap can now be flushed, add to snap_flush list, and return 1.
*
* Caller must hold i_lock.
* Caller must hold i_ceph_lock.
*/
int __ceph_finish_cap_snap(struct ceph_inode_info *ci,
struct ceph_cap_snap *capsnap)
......@@ -739,9 +739,9 @@ static void flush_snaps(struct ceph_mds_client *mdsc)
inode = &ci->vfs_inode;
ihold(inode);
spin_unlock(&mdsc->snap_flush_lock);
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
__ceph_flush_snaps(ci, &session, 0);
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
iput(inode);
spin_lock(&mdsc->snap_flush_lock);
}
......@@ -847,7 +847,7 @@ void ceph_handle_snap(struct ceph_mds_client *mdsc,
continue;
ci = ceph_inode(inode);
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
if (!ci->i_snap_realm)
goto skip_inode;
/*
......@@ -876,7 +876,7 @@ void ceph_handle_snap(struct ceph_mds_client *mdsc,
oldrealm = ci->i_snap_realm;
ci->i_snap_realm = realm;
spin_unlock(&realm->inodes_with_caps_lock);
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
ceph_get_snap_realm(mdsc, realm);
ceph_put_snap_realm(mdsc, oldrealm);
......@@ -885,7 +885,7 @@ void ceph_handle_snap(struct ceph_mds_client *mdsc,
continue;
skip_inode:
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
iput(inode);
}
......
fs/ceph/super.h
View file @ be655596
......@@ -220,7 +220,7 @@ struct ceph_dentry_info {
* The locking for D_COMPLETE is a bit odd:
* - we can clear it at almost any time (see ceph_d_prune)
* - it is only meaningful if:
* - we hold dir inode i_lock
* - we hold dir inode i_ceph_lock
* - we hold dir FILE_SHARED caps
* - the dentry D_COMPLETE is set
*/
......@@ -250,6 +250,8 @@ struct ceph_inode_xattrs_info {
struct ceph_inode_info {
struct ceph_vino i_vino; /* ceph ino + snap */
spinlock_t i_ceph_lock;
u64 i_version;
u32 i_time_warp_seq;
......@@ -271,7 +273,7 @@ struct ceph_inode_info {
struct ceph_inode_xattrs_info i_xattrs;
/* capabilities. protected _both_ by i_lock and cap->session's
/* capabilities. protected _both_ by i_ceph_lock and cap->session's
* s_mutex. */
struct rb_root i_caps; /* cap list */
struct ceph_cap *i_auth_cap; /* authoritative cap, if any */
......@@ -437,18 +439,18 @@ static inline void ceph_i_clear(struct inode *inode, unsigned mask)
{
struct ceph_inode_info *ci = ceph_inode(inode);
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
ci->i_ceph_flags &= ~mask;
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
}
static inline void ceph_i_set(struct inode *inode, unsigned mask)
{
struct ceph_inode_info *ci = ceph_inode(inode);
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
ci->i_ceph_flags |= mask;
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
}
static inline bool ceph_i_test(struct inode *inode, unsigned mask)
......@@ -456,9 +458,9 @@ static inline bool ceph_i_test(struct inode *inode, unsigned mask)
struct ceph_inode_info *ci = ceph_inode(inode);
bool r;
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
r = (ci->i_ceph_flags & mask) == mask;
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
return r;
}
......@@ -508,9 +510,9 @@ extern int __ceph_caps_issued_other(struct ceph_inode_info *ci,
static inline int ceph_caps_issued(struct ceph_inode_info *ci)
{
int issued;
spin_lock(&ci->vfs_inode.i_lock);
spin_lock(&ci->i_ceph_lock);
issued = __ceph_caps_issued(ci, NULL);
spin_unlock(&ci->vfs_inode.i_lock);
spin_unlock(&ci->i_ceph_lock);
return issued;
}
......@@ -518,9 +520,9 @@ static inline int ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask,
int touch)
{
int r;
spin_lock(&ci->vfs_inode.i_lock);
spin_lock(&ci->i_ceph_lock);
r = __ceph_caps_issued_mask(ci, mask, touch);
spin_unlock(&ci->vfs_inode.i_lock);
spin_unlock(&ci->i_ceph_lock);
return r;
}
......@@ -743,10 +745,9 @@ extern int ceph_add_cap(struct inode *inode,
extern void __ceph_remove_cap(struct ceph_cap *cap);
static inline void ceph_remove_cap(struct ceph_cap *cap)
{
struct inode *inode = &cap->ci->vfs_inode;
spin_lock(&inode->i_lock);
spin_lock(&cap->ci->i_ceph_lock);
__ceph_remove_cap(cap);
spin_unlock(&inode->i_lock);
spin_unlock(&cap->ci->i_ceph_lock);
}
extern void ceph_put_cap(struct ceph_mds_client *mdsc,
struct ceph_cap *cap);
......
fs/ceph/xattr.c
View file @ be655596
......@@ -343,8 +343,8 @@ void __ceph_destroy_xattrs(struct ceph_inode_info *ci)
}
static int __build_xattrs(struct inode *inode)
__releases(inode->i_lock)
__acquires(inode->i_lock)
__releases(ci->i_ceph_lock)
__acquires(ci->i_ceph_lock)
{
u32 namelen;
u32 numattr = 0;
......@@ -372,7 +372,7 @@ static int __build_xattrs(struct inode *inode)
end = p + ci->i_xattrs.blob->vec.iov_len;
ceph_decode_32_safe(&p, end, numattr, bad);
xattr_version = ci->i_xattrs.version;
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
xattrs = kcalloc(numattr, sizeof(struct ceph_xattr *),
GFP_NOFS);
......@@ -387,7 +387,7 @@ static int __build_xattrs(struct inode *inode)
goto bad_lock;
}
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
if (ci->i_xattrs.version != xattr_version) {
/* lost a race, retry */
for (i = 0; i < numattr; i++)
......@@ -418,7 +418,7 @@ static int __build_xattrs(struct inode *inode)
return err;
bad_lock:
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
bad:
if (xattrs) {
for (i = 0; i < numattr; i++)
......@@ -512,7 +512,7 @@ ssize_t ceph_getxattr(struct dentry *dentry, const char *name, void *value,
if (vxattrs)
vxattr = ceph_match_vxattr(vxattrs, name);
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
dout("getxattr %p ver=%lld index_ver=%lld\n", inode,
ci->i_xattrs.version, ci->i_xattrs.index_version);
......@@ -520,14 +520,14 @@ ssize_t ceph_getxattr(struct dentry *dentry, const char *name, void *value,
(ci->i_xattrs.index_version >= ci->i_xattrs.version)) {
goto get_xattr;
} else {
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
/* get xattrs from mds (if we don't already have them) */
err = ceph_do_getattr(inode, CEPH_STAT_CAP_XATTR);
if (err)
return err;
}
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
if (vxattr && vxattr->readonly) {
err = vxattr->getxattr_cb(ci, value, size);
......@@ -558,7 +558,7 @@ ssize_t ceph_getxattr(struct dentry *dentry, const char *name, void *value,
memcpy(value, xattr->val, xattr->val_len);
out:
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
return err;
}
......@@ -573,7 +573,7 @@ ssize_t ceph_listxattr(struct dentry *dentry, char *names, size_t size)
u32 len;
int i;
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
dout("listxattr %p ver=%lld index_ver=%lld\n", inode,
ci->i_xattrs.version, ci->i_xattrs.index_version);
......@@ -581,13 +581,13 @@ ssize_t ceph_listxattr(struct dentry *dentry, char *names, size_t size)
(ci->i_xattrs.index_version >= ci->i_xattrs.version)) {
goto list_xattr;
} else {
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
err = ceph_do_getattr(inode, CEPH_STAT_CAP_XATTR);
if (err)
return err;
}
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
err = __build_xattrs(inode);
if (err < 0)
......@@ -619,7 +619,7 @@ ssize_t ceph_listxattr(struct dentry *dentry, char *names, size_t size)
}
out:
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
return err;
}
......@@ -739,7 +739,7 @@ int ceph_setxattr(struct dentry *dentry, const char *name,
if (!xattr)
goto out;
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
retry:
issued = __ceph_caps_issued(ci, NULL);
if (!(issued & CEPH_CAP_XATTR_EXCL))
......@@ -752,12 +752,12 @@ int ceph_setxattr(struct dentry *dentry, const char *name,
required_blob_size > ci->i_xattrs.prealloc_blob->alloc_len) {
struct ceph_buffer *blob = NULL;
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
dout(" preaallocating new blob size=%d\n", required_blob_size);
blob = ceph_buffer_new(required_blob_size, GFP_NOFS);
if (!blob)
goto out;
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
if (ci->i_xattrs.prealloc_blob)
ceph_buffer_put(ci->i_xattrs.prealloc_blob);
ci->i_xattrs.prealloc_blob = blob;
......@@ -770,13 +770,13 @@ int ceph_setxattr(struct dentry *dentry, const char *name,
dirty = __ceph_mark_dirty_caps(ci, CEPH_CAP_XATTR_EXCL);
ci->i_xattrs.dirty = true;
inode->i_ctime = CURRENT_TIME;
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
if (dirty)
__mark_inode_dirty(inode, dirty);
return err;
do_sync:
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
err = ceph_sync_setxattr(dentry, name, value, size, flags);
out:
kfree(newname);
......@@ -833,7 +833,7 @@ int ceph_removexattr(struct dentry *dentry, const char *name)
return -EOPNOTSUPP;
}
spin_lock(&inode->i_lock);
spin_lock(&ci->i_ceph_lock);
__build_xattrs(inode);
issued = __ceph_caps_issued(ci, NULL);
dout("removexattr %p issued %s\n", inode, ceph_cap_string(issued));
......@@ -846,12 +846,12 @@ int ceph_removexattr(struct dentry *dentry, const char *name)
ci->i_xattrs.dirty = true;
inode->i_ctime = CURRENT_TIME;
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
if (dirty)
__mark_inode_dirty(inode, dirty);
return err;
do_sync:
spin_unlock(&inode->i_lock);
spin_unlock(&ci->i_ceph_lock);
err = ceph_send_removexattr(dentry, name);
return err;
}
......
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