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Theodore Ts'o 2ec0ae3ace ext4: Fix race in ext4_inode_info.i_cached_extent ... If two CPU's simultaneously call ext4_ext_get_blocks() at the same time, there is nothing protecting the i_cached_extent structure from being used and updated at the same time. This could potentially cause the wrong location on disk to be read or written to, including potentially causing the corruption of the block group descriptors and/or inode table. This bug has been in the ext4 code since almost the very beginning of ext4's development. Fortunately once the data is stored in the page cache cache, ext4_get_blocks() doesn't need to be called, so trying to replicate this problem to the point where we could identify its root cause was *extremely* difficult. Many thanks to Kevin Shanahan for working over several months to be able to reproduce this easily so we could finally nail down the cause of the corruption. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Reviewed-by: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>		16 years ago
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Kconfig	trivial: fix typos/grammar errors in Kconfig texts	16 years ago
Makefile	…
acl.c	New helper - current_umask()	16 years ago
acl.h	…
balloc.c	ext4: Use lowercase names of quota functions	16 years ago
bitmap.c	…
dir.c	ext4: New rec_len encoding for very large blocksizes	16 years ago
ext4.h	Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4	16 years ago
ext4_extents.h	ext4: Validate extent details only when read from the disk	16 years ago
ext4_i.h	ext4: New inode/block allocation algorithms for flex_bg filesystems	16 years ago
ext4_jbd2.c	…
ext4_jbd2.h	ext4: Remove "extents" mount option	16 years ago
ext4_sb.h	ext4: Add sysfs support	16 years ago
extents.c	ext4: Fix race in ext4_inode_info.i_cached_extent	16 years ago
file.c	ext4: Fix discard of inode prealloc space with delayed allocation.	16 years ago
fsync.c	…
group.h	…
hash.c	…
ialloc.c	ext4: Fix potential inode allocation soft lockup in Orlov allocator	16 years ago
inode.c	ext4: Clear the unwritten buffer_head flag after the extent is initialized	16 years ago
ioctl.c	ext4: add EXT4_IOC_ALLOC_DA_BLKS ioctl	16 years ago
mballoc.c	ext4: fix locking typo in mballoc which could cause soft lockup hangs	16 years ago
mballoc.h	ext4: Rename pa_linear to pa_type	16 years ago
migrate.c	ext4: Fix NULL dereference in ext4_ext_migrate()'s error handling	16 years ago
namei.c	ext4: Use lowercase names of quota functions	16 years ago
namei.h	…
resize.c	ext4: Use atomic_t's in struct flex_groups	16 years ago
super.c	ext4: check block device size on mount	16 years ago
symlink.c	…
xattr.c	ext4: Use lowercase names of quota functions	16 years ago
xattr.h	…
xattr_security.c	…
xattr_trusted.c	…
xattr_user.c	…