Commit c7298013 authored by Gregoire Pichon's avatar Gregoire Pichon Committed by Greg Kroah-Hartman

staging: lustre: osc: fix max_dirty_mb tunable setting limit

The OSC tunable max_dirty_mb must be set to a value strictly lower
than 2048, as it is assumed by OSS in ofd_grant_alloc() routine.
Signed-off-by: default avatarGregoire Pichon <gregoire.pichon@bull.net>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-7218
Reviewed-on: http://review.whamcloud.com/16652Reviewed-by: default avatarAndreas Dilger <andreas.dilger@intel.com>
Reviewed-by: default avatarBobi Jam <bobijam@hotmail.com>
Signed-off-by: default avatarJames Simmons <jsimmons@infradead.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent b8cb86fd
...@@ -162,7 +162,7 @@ static ssize_t max_dirty_mb_store(struct kobject *kobj, ...@@ -162,7 +162,7 @@ static ssize_t max_dirty_mb_store(struct kobject *kobj,
pages_number *= 1 << (20 - PAGE_SHIFT); /* MB -> pages */ pages_number *= 1 << (20 - PAGE_SHIFT); /* MB -> pages */
if (pages_number <= 0 || if (pages_number <= 0 ||
pages_number > OSC_MAX_DIRTY_MB_MAX << (20 - PAGE_SHIFT) || pages_number >= OSC_MAX_DIRTY_MB_MAX << (20 - PAGE_SHIFT) ||
pages_number > totalram_pages / 4) /* 1/4 of RAM */ pages_number > totalram_pages / 4) /* 1/4 of RAM */
return -ERANGE; return -ERANGE;
......
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