- 29 Jun, 2019 21 commits
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Christoph Hellwig authored
The xfs_buf structure is basically used as a glorified container for a memory allocation in the log recovery code. Replace it with a call to kmem_alloc_large and a simple abstraction to read into or write from it synchronously using chained bios. Signed-off-by:
Christoph Hellwig <hch@lst.de> Reviewed-by:
Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by:
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Christoph Hellwig authored
This simplifies both the helper and the callers. We lost a bit of size sanity checking, but that is already covered by KASAN if needed. Signed-off-by:
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Christoph Hellwig authored
Move the workqueue used for log I/O completions from struct xfs_mount to struct xlog to keep it self contained in the log code. Signed-off-by:
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Christoph Hellwig authored
Currently the XFS logging code uses the xfs_buf structure and associated APIs to write the log buffers to disk. This requires various special cases in the log code and is generally not very optimal. Instead of using a buffer just allocate a kmem_alloc_larger region for each log buffer, and use a bio and bio_vec array embedded in the iclog structure to write the buffer to disk. This also allows for using the bio split and chaining case to deal with the case of a log buffer wrapping around the end of the log. Signed-off-by:
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Christoph Hellwig authored
Use the slightly shorter way to get at the buftarg for the log device wherever we can in the log and log recovery code. Signed-off-by:
Dave Chinner <dchinner@redhat.com> Reviewed-by:
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Christoph Hellwig authored
The only caller unconditionally passes true here. Signed-off-by:
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Christoph Hellwig authored
Just a small bit of code tidying up. Signed-off-by:
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Christoph Hellwig authored
Split out another self-contained bit of code from xlog_sync. Signed-off-by:
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Christoph Hellwig authored
Split out a self-contained chunk of code from xlog_sync that calculates the split offset for an iclog that wraps the log end and bumps the cycles for the second half. Use the chance to bring some sanity to the variables used to track the split in xlog_sync by not changing the count variable, and instead use split as the offset for the split and use those to calculate the sizes and offsets for the two write buffers. Signed-off-by:
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Christoph Hellwig authored
Replace the not very useful xlog_bdstrat wrapper with a new version that that takes care of all the common logic for writing log buffers. Use the opportunity to avoid overloading the buffer address with the log relative address, and to shed the unused return value. Signed-off-by:
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Christoph Hellwig authored
If we have to split a log write because it wraps the end of the log we can't just use REQ_PREFLUSH to flush before the first log write, as the writes might get reordered somewhere in the I/O stack. Issue a manual flush in that case so that the ordering of the two log I/Os doesn't matter. Signed-off-by:
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Christoph Hellwig authored
This value is the only flag in ic_state, which we otherwise use as a state. Switch it to a new debug-only field and also report and actual error in the buffer in the I/O completion path. Signed-off-by:
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Christoph Hellwig authored
Reformat xlog_get_lowest_lsn to our usual style. Signed-off-by:
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Christoph Hellwig authored
We don't really need all the messy branches in the function, as it really does three things, out of which 2 are common for all branches: 1) set up mount point log buffer size and count values if not already done from mount options 2) calculate the number of log headers 3) set up all the values in struct xlog based on the above Signed-off-by: -
Christoph Hellwig authored
This field is never used, so we can simply kill it. Signed-off-by:
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Christoph Hellwig authored
Rename the function to kmem_to_page and move it to kmem.h together with our kmem_large allocator that may either return kmalloced or vmalloc pages. Signed-off-by:
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Christoph Hellwig authored
Assining a numerical value that is not close to the flags defined near by is just asking for conflicts later on. Signed-off-by:
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Christoph Hellwig authored
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Christoph Hellwig authored
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Darrick J. Wong authored
The inode geometry structure isn't related to ondisk format; it's support for the mount structure. Move it to xfs_shared.h. Signed-off-by:
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Darrick J. Wong authored
Claim maintainership over the miscellaneous files outside of fs/xfs/ that came from xfs. Signed-off-by:
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- 12 Jun, 2019 9 commits
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Eric Sandeen authored
There are several functions which take a flag argument that is only ever passed as "0," so remove these arguments. Signed-off-by:
Eric Sandeen <sandeen@redhat.com> Reviewed-by:
Brian Foster <bfoster@redhat.com> Reviewed-by:
Bill O'Donnell <billodo@redhat.com> Reviewed-by:
Allison Collins <allison.henderson@oracle.com> Reviewed-by:
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Christoph Hellwig authored
The field is only used for a few assertations. Shrink the dqout structure instead, similarly to what commit f3ca8738 ("xfs: remove i_transp") did for the xfs_inode. Signed-off-by:
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Christoph Hellwig authored
xfs_buf_zero is the only caller of xfs_buf_iomove. Remove support for copying from or to the buffer in xfs_buf_iomove and merge the two functions. Signed-off-by:
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Eric Sandeen authored
The flags value is always passed as 0 so remove the argument. Signed-off-by:
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Eric Sandeen authored
The XFS_BUILD_OPTIONS string, shown at module init time and in modinfo output, does not currently include all available build options. So, add in CONFIG_XFS_WARN and CONFIG_XFS_REPAIR. It has been suggested in some quarters That this is not enough. Well ... Anybody who would like to see this in a sysfs file can send a patch. :) Signed-off-by:
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Darrick J. Wong authored
Finish converting all the old inode_cluster_size >> inopblog users to inodes_per_cluster. Signed-off-by:
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Darrick J. Wong authored
inode_cluster_size is supposed to represent the size (in bytes) of an inode cluster buffer. We avoid having to handle multiple clusters per filesystem block on filesystems with large blocks by openly rounding this value up to 1 FSB when necessary. However, we never reset inode_cluster_size to reflect this new rounded value, which adds to the potential for mistakes in calculating geometries. Fix this by setting inode_cluster_size to reflect the rounded-up size if needed, and special-case the few places in the sparse inodes code where we actually need the smaller value to validate on-disk metadata. Signed-off-by:
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Darrick J. Wong authored
Migrate all of the inode geometry setup code from xfs_mount.c into a single libxfs function that we can share with xfsprogs. Signed-off-by:
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Darrick J. Wong authored
Separate the inode geometry information into a distinct structure. Signed-off-by:
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- 09 Jun, 2019 10 commits
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Amir Goldstein authored
Like ->write_iter(), we update mtime and strip setuid of dst file before copy and like ->read_iter(), we update atime of src file after copy. Signed-off-by:
Amir Goldstein <amir73il@gmail.com> Acked-by:
Miklos Szeredi <miklos@szeredi.hu> Reviewed-by:
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Amir Goldstein authored
We want to enable cross-filesystem copy_file_range functionality where possible, so push the "same superblock only" checks down to the individual filesystem callouts so they can make their own decisions about cross-superblock copy offload and fallack to generic_copy_file_range() for cross-superblock copy. [Amir] We do not call ->remap_file_range() in case the files are not on the same sb and do not call ->copy_file_range() in case the files do not belong to the same filesystem driver. This changes behavior of the copy_file_range(2) syscall, which will now allow cross filesystem in-kernel copy. CIFS already supports cross-superblock copy, between two shares to the same server. This functionality will now be available via the copy_file_range(2) syscall. Cc: Steve French <stfrench@microsoft.com> Signed-off-by:
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Amir Goldstein authored
Note that by using the helper, the order of calling file_remove_privs() after file_update_mtime() in xfs_file_aio_write_checks() has changed. Signed-off-by:
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Amir Goldstein authored
The combination of file_remove_privs() and file_update_mtime() is quite common in filesystem ->write_iter() methods. Modelled after the helper file_accessed(), introduce file_modified() and use it from generic_remap_file_range_prep(). Note that the order of calling file_remove_privs() before file_update_mtime() in the helper was matched to the more common order by filesystems and not the current order in generic_remap_file_range_prep(). Signed-off-by:
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Amir Goldstein authored
Like the clone and dedupe interfaces we've recently fixed, the copy_file_range() implementation is missing basic sanity, limits and boundary condition tests on the parameters that are passed to it from userspace. Create a new "generic_copy_file_checks()" function modelled on the generic_remap_checks() function to provide this missing functionality. [Amir] Shorten copy length instead of checking pos_in limits because input file size already abides by the limits. Signed-off-by:
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Amir Goldstein authored
The access limit checks on input file range in generic_remap_checks() are redundant because the input file size is guaranteed to be within limits and pos+len are already checked to be within input file size. Beyond the fact that the check cannot fail, if it would have failed, it could return -EFBIG for input file range error. There is no precedent for that. -EFBIG is returned in syscalls that would change file length. With that call removed, we can fold generic_access_check_limits() into generic_write_check_limits(). Signed-off-by:
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Amir Goldstein authored
Factor out helper with some checks on in/out file that are common to clone_file_range and copy_file_range. Suggested-by:
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Dave Chinner authored
Now that we have generic_copy_file_range(), remove it as a fallback case when offloads fail. This puts the responsibility for executing fallbacks on the filesystems that implement ->copy_file_range and allows us to add operational validity checks to generic_copy_file_range(). Rework vfs_copy_file_range() to call a new do_copy_file_range() helper to execute the copying callout, and move calls to generic_file_copy_range() into filesystem methods where they currently return failures. [Amir] overlayfs is not responsible of executing the fallback. It is the responsibility of the underlying filesystem. Signed-off-by:
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Dave Chinner authored
Right now if vfs_copy_file_range() does not use any offload mechanism, it falls back to calling do_splice_direct(). This fails to do basic sanity checks on the files being copied. Before we start adding this necessarily functionality to the fallback path, separate it out into generic_copy_file_range(). generic_copy_file_range() has the same prototype as ->copy_file_range() so that filesystems can use it in their custom ->copy_file_range() method if they so choose. Signed-off-by:
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Linus Torvalds authored
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