Omar Sandoval 0c4da70c83 xfs: fix realtime file data space leak ... Realtime files in XFS allocate extents in rextsize units. However, the written/unwritten state of those extents is still tracked in blocksize units. Therefore, a realtime file can be split up into written and unwritten extents that are not necessarily aligned to the realtime extent size. __xfs_bunmapi() has some logic to handle these various corner cases. Consider how it handles the following case: 1. The last extent is unwritten. 2. The last extent is smaller than the realtime extent size. 3. startblock of the last extent is not aligned to the realtime extent size, but startblock + blockcount is. In this case, __xfs_bunmapi() calls xfs_bmap_add_extent_unwritten_real() to set the second-to-last extent to unwritten. This should merge the last and second-to-last extents, so __xfs_bunmapi() moves on to the second-to-last extent. However, if the size of the last and second-to-last extents combined is greater than MAXEXTLEN, xfs_bmap_add_extent_unwritten_real() does not merge the two extents. When that happens, __xfs_bunmapi() skips past the last extent without unmapping it, thus leaking the space. Fix it by only unwriting the minimum amount needed to align the last extent to the realtime extent size, which is guaranteed to merge with the last extent. Signed-off-by: Omar Sandoval <osandov@fb.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>		2019-12-02 17:58:50 -08:00
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xfs_ag_resv.c	xfs: fix missing header includes	2019-11-07 13:00:53 -08:00
xfs_ag_resv.h	xfs: pass transaction lock while setting up agresv on cyclic metadata	2018-07-29 22:37:08 -07:00
xfs_ag.c	xfs: remove unused flags arg from xfs_get_aghdr_buf()	2019-10-06 15:39:05 -07:00
xfs_ag.h	xfs: add a new ioctl to describe allocation group geometry	2019-04-14 18:15:57 -07:00
xfs_alloc_btree.c	xfs: track active state of allocation btree cursors	2019-10-21 09:04:58 -07:00
xfs_alloc_btree.h	xfs: convert to SPDX license tags	2018-06-06 14:17:53 -07:00
xfs_alloc.c	xfs: convert open coded corruption check to use XFS_IS_CORRUPT	2019-11-13 11:08:01 -08:00
xfs_alloc.h	xfs: cleanup use of the XFS_ALLOC_ flags	2019-11-03 10:22:31 -08:00
xfs_attr_leaf.c	xfs: remove the mappedbno argument to xfs_da_get_buf	2019-11-22 08:17:10 -08:00
xfs_attr_leaf.h	xfs: remove the mappedbno argument to xfs_attr3_leaf_read	2019-11-22 08:17:09 -08:00
xfs_attr_remote.c	xfs: fix missing header includes	2019-11-07 13:00:53 -08:00
xfs_attr_remote.h	xfs: convert to SPDX license tags	2018-06-06 14:17:53 -07:00
xfs_attr_sf.h	xfs: convert to SPDX license tags	2018-06-06 14:17:53 -07:00
xfs_attr.c	xfs: split xfs_da3_node_read	2019-11-22 08:17:10 -08:00
xfs_attr.h	xfs: allocate xattr buffer on demand	2019-08-30 22:43:57 -07:00
xfs_bit.c	xfs: fix missing header includes	2019-11-07 13:00:53 -08:00
xfs_bit.h	xfs: convert to SPDX license tags	2018-06-06 14:17:53 -07:00
xfs_bmap_btree.c	xfs: fix sign handling problem in xfs_bmbt_diff_two_keys	2019-08-28 08:31:01 -07:00
xfs_bmap_btree.h	xfs: convert to SPDX license tags	2018-06-06 14:17:53 -07:00
xfs_bmap.c	xfs: fix realtime file data space leak	2019-12-02 17:58:50 -08:00
xfs_bmap.h	xfs: use a struct iomap in xfs_writepage_ctx	2019-10-21 08:51:59 -07:00
xfs_btree.c	xfs: Remove kmem_zone_free() wrapper	2019-11-18 08:40:44 -08:00
xfs_btree.h	xfs: actually check xfs_btree_check_block return in xfs_btree_islastblock	2019-11-11 12:42:52 -08:00
xfs_cksum.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
xfs_da_btree.c	xfs: remove the mappedbno argument to xfs_da_get_buf	2019-11-22 08:17:10 -08:00
xfs_da_btree.h	xfs: remove the mappedbno argument to xfs_da_get_buf	2019-11-22 08:17:10 -08:00
xfs_da_format.h	xfs: move incore structures out of xfs_da_format.h	2019-11-10 16:54:19 -08:00
xfs_defer.c	fs: xfs: Remove KM_NOSLEEP and KM_SLEEP.	2019-08-26 12:06:22 -07:00
xfs_defer.h	xfs: streamline defer op type handling	2018-12-12 08:47:16 -08:00
xfs_dir2_block.c	xfs: remove the mappedbno argument to xfs_da_read_buf	2019-11-22 08:17:10 -08:00
xfs_dir2_data.c	xfs: remove the mappedbno argument to xfs_da_get_buf	2019-11-22 08:17:10 -08:00
xfs_dir2_leaf.c	xfs: remove the mappedbno argument to xfs_da_get_buf	2019-11-22 08:17:10 -08:00
xfs_dir2_node.c	xfs: remove the mappedbno argument to xfs_da_get_buf	2019-11-22 08:17:10 -08:00
xfs_dir2_priv.h	xfs: remove the mappedbno argument to xfs_da_read_buf	2019-11-22 08:17:10 -08:00
xfs_dir2_sf.c	xfs: Fix deadlock between AGI and AGF when target_ip exists in xfs_rename()	2019-11-13 11:13:45 -08:00
xfs_dir2.c	xfs: devirtualize ->m_dirnameops	2019-11-13 11:13:45 -08:00
xfs_dir2.h	xfs: Fix deadlock between AGI and AGF when target_ip exists in xfs_rename()	2019-11-13 11:13:45 -08:00
xfs_dquot_buf.c	xfs: remove the xfs_disk_dquot_t and xfs_dquot_t	2019-11-13 11:13:45 -08:00
xfs_errortag.h	xfs: cache unlinked pointers in an rhashtable	2019-02-11 16:07:01 -08:00
xfs_format.h	xfs: remove unused typedef definitions	2019-11-13 18:22:40 -08:00
xfs_fs.h	xfs: avoid time_t in user api	2019-11-13 11:13:45 -08:00
xfs_health.h	xfs: introduce new v5 bulkstat structure	2019-07-03 20:36:26 -07:00
xfs_ialloc_btree.c	xfs: create simplified inode walk function	2019-07-02 09:40:05 -07:00
xfs_ialloc_btree.h	xfs: create simplified inode walk function	2019-07-02 09:40:05 -07:00
xfs_ialloc.c	xfs: kill the XFS_WANT_CORRUPT_* macros	2019-11-12 17:19:02 -08:00
xfs_ialloc.h	xfs: refactor inode geometry setup routines	2019-06-12 08:37:40 -07:00
xfs_iext_tree.c	xfs: fix inode fork extent count overflow	2019-10-21 09:04:58 -07:00
xfs_inode_buf.c	xfs: don't reset the "inode core" in xfs_iread	2019-11-13 11:13:45 -08:00
xfs_inode_buf.h	xfs: merge the projid fields in struct xfs_icdinode	2019-11-13 11:13:45 -08:00
xfs_inode_fork.c	xfs: Remove kmem_zone_free() wrapper	2019-11-18 08:40:44 -08:00
xfs_inode_fork.h	xfs: refactor "does this fork map blocks" predicate	2019-11-10 10:22:51 -08:00
xfs_log_format.h	xfs: Correct comment tyops -> typos	2019-11-10 10:21:57 -08:00
xfs_log_recover.h	xfs: remove unused typedef definitions	2019-11-13 18:22:40 -08:00
xfs_log_rlimit.c	xfs: remove unused header files	2019-06-28 19:30:43 -07:00
xfs_quota_defs.h	xfs: change some error-less functions to void types	2019-05-01 20:26:30 -07:00
xfs_refcount_btree.c	xfs: remove unused header files	2019-06-28 19:30:43 -07:00
xfs_refcount_btree.h	xfs: pass transaction lock while setting up agresv on cyclic metadata	2018-07-29 22:37:08 -07:00
xfs_refcount.c	xfs: convert open coded corruption check to use XFS_IS_CORRUPT	2019-11-13 11:08:01 -08:00
xfs_refcount.h	xfs: remove unnecessary int returns from deferred refcount functions	2019-08-28 08:31:02 -07:00
xfs_rmap_btree.c	xfs: remove unused header files	2019-06-28 19:30:43 -07:00
xfs_rmap_btree.h	xfs: pass transaction lock while setting up agresv on cyclic metadata	2018-07-29 22:37:08 -07:00
xfs_rmap.c	xfs: convert open coded corruption check to use XFS_IS_CORRUPT	2019-11-13 11:08:01 -08:00
xfs_rmap.h	xfs: reinitialize rm_flags when unpacking an offset into an rmap irec	2019-08-28 08:31:02 -07:00
xfs_rtbitmap.c	xfs: convert open coded corruption check to use XFS_IS_CORRUPT	2019-11-13 11:08:01 -08:00
xfs_sb.c	xfs: fix missing header includes	2019-11-07 13:00:53 -08:00
xfs_sb.h	xfs: change some error-less functions to void types	2019-05-01 20:26:30 -07:00
xfs_shared.h	xfs: remove all *_ITER_CONTINUE values	2019-08-30 22:43:56 -07:00
xfs_symlink_remote.c	xfs: remove unused header files	2019-06-28 19:30:43 -07:00
xfs_trans_inode.c	xfs: use a struct timespec64 for the in-core crtime	2019-11-13 11:13:45 -08:00
xfs_trans_resv.c	xfs: remove the xfs_qoff_logitem_t typedef	2019-11-13 18:22:28 -08:00
xfs_trans_resv.h	xfs: convert to SPDX license tags	2018-06-06 14:17:53 -07:00
xfs_trans_space.h	xfs: separate inode geometry	2019-06-12 08:37:40 -07:00
xfs_types.c	xfs: remove unused header files	2019-06-28 19:30:43 -07:00
xfs_types.h	xfs: remove unused structure members & simple typedefs	2019-11-13 18:22:41 -08:00