This is a note to let you know that I've just added the patch titled xfs: bump up reserved blocks in xfs_alloc_set_aside to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: xfs-bump-up-reserved-blocks-in-xfs_alloc_set_aside.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From hch@xxxxxx Thu Feb 2 11:12:10 2017 From: Christoph Hellwig <hch@xxxxxx> Date: Thu, 2 Feb 2017 08:55:53 +0100 Subject: xfs: bump up reserved blocks in xfs_alloc_set_aside To: stable@xxxxxxxxxxxxxxx Cc: linux-xfs@xxxxxxxxxxxxxxx, "Darrick J. Wong" <darrick.wong@xxxxxxxxxx> Message-ID: <1486022171-8076-2-git-send-email-hch@xxxxxx> From: Christoph Hellwig <hch@xxxxxx> commit 5149fd327f16e393c1d04fa5325ab072c32472bf upstream. Setting aside 4 blocks globally for bmbt splits isn't all that useful, as different threads can allocate space in parallel. Bump it to 4 blocks per AG to allow each thread that is currently doing an allocation to dip into it separately. Without that we may no have enough reserved blocks if there are enough parallel transactions in an almost out space file system that all run into bmap btree splits. Signed-off-by: Christoph Hellwig <hch@xxxxxx> Reviewed-by: Brian Foster <bfoster@xxxxxxxxxx> Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- fs/xfs/libxfs/xfs_alloc.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) --- a/fs/xfs/libxfs/xfs_alloc.c +++ b/fs/xfs/libxfs/xfs_alloc.c @@ -95,10 +95,7 @@ unsigned int xfs_alloc_set_aside( struct xfs_mount *mp) { - unsigned int blocks; - - blocks = 4 + (mp->m_sb.sb_agcount * XFS_ALLOC_AGFL_RESERVE); - return blocks; + return mp->m_sb.sb_agcount * (XFS_ALLOC_AGFL_RESERVE + 4); } /* Patches currently in stable-queue which might be from hch@xxxxxx are queue-4.9/xfs-don-t-rely-on-total-in-xfs_alloc_space_available.patch queue-4.9/xfs-replace-xfs_mode_to_ftype-table-with-switch-statement.patch queue-4.9/xfs-fix-bogus-minleft-manipulations.patch queue-4.9/xfs-fix-cow-writeback-race.patch queue-4.9/xfs-sanity-check-inode-mode-when-creating-new-dentry.patch queue-4.9/xfs-extsize-hints-are-not-unlikely-in-xfs_bmap_btalloc.patch queue-4.9/xfs-bump-up-reserved-blocks-in-xfs_alloc_set_aside.patch queue-4.9/xfs-add-missing-include-dependencies-to-xfs_dir2.h.patch queue-4.9/xfs-fix-bmv_count-confusion-w-shared-extents.patch queue-4.9/xfs-adjust-allocation-length-in-xfs_alloc_space_available.patch queue-4.9/xfs-verify-dirblocklog-correctly.patch queue-4.9/xfs-fix-xfs_mode_to_ftype-prototype.patch queue-4.9/xfs-clear-_xbf_pages-from-buffers-when-readahead-page.patch queue-4.9/xfs-remove-racy-hasattr-check-from-attr-ops.patch queue-4.9/xfs-make-the-assert-condition-likely.patch queue-4.9/xfs-sanity-check-directory-inode-di_size.patch queue-4.9/xfs-don-t-print-warnings-when-xfs_log_force-fails.patch queue-4.9/xfs-don-t-wrap-id-in-xfs_dq_get_next_id.patch queue-4.9/xfs-sanity-check-inode-di_mode.patch -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html