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2013-01-21Ext2: return ENOMEM rather than EIO if sb_getblk failsWang Shilong1-1/+1
As the only reason that sb_getblks fails is that allocation fails. It will be better to use ENOMEM rather than EIO. Signed-off-by: Wang Shilong <wangsl-fnst@cn.fujitsu.com> Signed-off-by: Jan Kara <jack@suse.cz>
2013-01-21Ext2: use unlikely to improve the efficiency of the kernelWang Shilong1-1/+1
Because the function 'sb_getblk' seldomly fails to return NULL value. It will be better to use unlikely to optimize it. Signed-off-by: Wang shilong <wangsl-fnst@cn.fujitsu.com> Signed-off-by: Jan Kara <jack@suse.cz>
2012-04-11ext2: Remove s_dirt handlingJan Kara1-1/+0
Places which modify superblock feature / state fields mark the superblock buffer dirty so it is written out by flusher thread. Thus there's no need to set s_dirt there. The only other fields changing in the superblock are the numbers of free blocks, free inodes and s_wtime. There's no real need to write (or even compute) these periodically. Free blocks / inodes counters are recomputed on every mount from group counters anyway and value of s_wtime is only informational and imprecise anyway. So it should be enough to write these opportunistically on mount, remount, umount, and sync_fs times. Signed-off-by: Jan Kara <jack@suse.cz>
2012-01-09ext2/3/4: delete unneeded includes of module.hPaul Gortmaker1-1/+0
Delete any instances of include module.h that were not strictly required. In the case of ext2, the declaration of MODULE_LICENSE etc. were in inode.c but the module_init/exit were in super.c, so relocate the MODULE_LICENCE/AUTHOR block to super.c which makes it consistent with ext3 and ext4 at the same time. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Jan Kara <jack@suse.cz>
2011-07-22ext2: check xattr name_len before acquiring xattr_sem in ext2_xattr_getWang Sheng-Hui1-5/+5
In ext2_xattr_get(), the code will acquire xattr_sem first, later checks the length of xattr name_len > 255. It's unnecessarily time consuming and also ext2_xattr_set() checks the length before other checks. So move the check before acquiring xattr_sem to make these two functions consistent. Signed-off-by: Wang Sheng-Hui <shhuiw@gmail.com> Signed-off-by: Jan Kara <jack@suse.cz>
2011-03-31Fix common misspellingsLucas De Marchi1-1/+1
Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2011-01-10ext2: remove dead code in ext2_xattr_getWang Sheng-Hui1-8/+0
Reviewed-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Wang Sheng-Hui <crosslonelyover@gmail.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2011-01-10ext2,ext3,ext4: clarify comment for extN_xattr_set_handleWang Sheng-Hui1-1/+1
Signed-off-by: Wang Sheng-Hui <crosslonelyover@gmail.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2010-10-25fs: add sync_inode_metadataChristoph Hellwig1-1/+1
Add a new helper to write out the inode using the writeback code, that is including the correct dirty bit and list manipulation. A few of filesystems already opencode this, and a lot of others should be using it instead of using write_inode_now which also writes out the data. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-08-09mbcache: Remove unused featuresAndreas Gruenbacher1-7/+5
The mbcache code was written to support a variable number of indexes, but all the existing users use exactly one index. Simplify to code to support only that case. There are also no users of the cache entry free operation, and none of the users keep extra data in cache entries. Remove those features as well. Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-08-09Don't dirty the victim in ext2_xattr_delete_inode()Al Viro1-2/+0
... it's beyond fs-writeback reach already - writeback won't be started at that point. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-08-09Take dirtying the inode to callers of ext2_free_blocks()Al Viro1-0/+3
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-08-09ext2: switch to dquot_free_block_nodirty()Al Viro1-4/+8
brute-force conversion Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-21ext2: constify xattr_handlerStephen Hemminger1-5/+5
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-21ext2: Add ext2_sb_info s_lock spinlockJan Blunck1-0/+2
Add a spinlock that protects against concurrent modifications of s_mount_state, s_blocks_last, s_overhead_last and the content of the superblock's buffer pointed to by sbi->s_es. The spinlock is now used in ext2_xattr_update_super_block() which was setting the EXT2_FEATURE_COMPAT_EXT_ATTR flag on the superblock without protection before. Likewise the spinlock is used in ext2_show_options() to have a consistent view of the mount options. This is a preparation patch for removing the BKL from ext2 in the next patch. Signed-off-by: Jan Blunck <jblunck@suse.de> Cc: Andi Kleen <andi@firstfloor.org> Cc: Jan Kara <jack@suse.cz> Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Jan Kara <jack@suse.cz>
2010-03-05dquot: cleanup space allocation / freeing routinesChristoph Hellwig1-5/+5
Get rid of the alloc_space, free_space, reserve_space, claim_space and release_rsv dquot operations - they are always called from the filesystem and if a filesystem really needs their own (which none currently does) it can just call into it's own routine directly. Move shared logic into the common __dquot_alloc_space, dquot_claim_space_nodirty and __dquot_free_space low-level methods, and rationalize the wrappers around it to move as much as possible code into the common block for CONFIG_QUOTA vs not. Also rename all these helpers to be named dquot_* instead of vfs_dq_*. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jan Kara <jack@suse.cz>
2009-12-16sanitize xattr handler prototypesChristoph Hellwig1-4/+7
Add a flags argument to struct xattr_handler and pass it to all xattr handler methods. This allows using the same methods for multiple handlers, e.g. for the ACL methods which perform exactly the same action for the access and default ACLs, just using a different underlying attribute. With a little more groundwork it'll also allow sharing the methods for the regular user/trusted/secure handlers in extN, ocfs2 and jffs2 like it's already done for xfs in this patch. Also change the inode argument to the handlers to a dentry to allow using the handlers mechnism for filesystems that require it later, e.g. cifs. [with GFS2 bits updated by Steven Whitehouse <swhiteho@redhat.com>] Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: James Morris <jmorris@namei.org> Acked-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-03-26ext2: Use lowercase names of quota functionsJan Kara1-4/+4
Use lowercase names of quota functions instead of old uppercase ones. Signed-off-by: Jan Kara <jack@suse.cz> CC: linux-ext4@vger.kernel.org
2008-04-28ext2: use ext2_group_first_block_no()Akinobu Mita1-4/+2
Use ext2_group_first_block_no() and assign the return values to ext2_fsblk_t variables. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-28ext2: le*_add_cpu conversionMarcin Slusarz1-6/+3
replace all: little_endian_variable = cpu_to_leX(leX_to_cpu(little_endian_variable) + expression_in_cpu_byteorder); with: leX_add_cpu(&little_endian_variable, expression_in_cpu_byteorder); generated with semantic patch Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-15vfs: fix possible deadlock in ext2, ext3, ext4 when using xattrsJan Kara1-1/+1
mb_cache_entry_alloc() was allocating cache entries with GFP_KERNEL. But filesystems are calling this function while holding xattr_sem so possible recursion into the fs violates locking ordering of xattr_sem and transaction start / i_mutex for ext2-4. Change mb_cache_entry_alloc() so that filesystems can specify desired gfp mask and use GFP_NOFS from all of them. Signed-off-by: Jan Kara <jack@suse.cz> Reported-by: Dave Jones <davej@redhat.com> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17ext2 reservationsMartin J. Bligh1-2/+1
Val's cross-port of the ext3 reservations code into ext2. [mbligh@mbligh.org: Small type error for printk [akpm@linux-foundation.org: fix types, sync with ext3] [mbligh@mbligh.org: Bring ext2 reservations code in line with latest ext3] [akpm@linux-foundation.org: kill noisy printk] [akpm@linux-foundation.org: remember to dirty the gdp's block] [akpm@linux-foundation.org: cross-port the missed 5dea5176e5c32ef9f0d1a41d28427b3bf6881b3a] [akpm@linux-foundation.org: cross-port e6022603b9aa7d61d20b392e69edcdbbc1789969] [akpm@linux-foundation.org: Port the omitted 08fb306fe63d98eb86e3b16f4cc21816fa47f18e] [akpm@linux-foundation.org: Backport the missed 20acaa18d0c002fec180956f87adeb3f11f635a6] [akpm@linux-foundation.org: fixes] [cmm@us.ibm.com: fix reservation extension] [bunk@stusta.de: make ext2_get_blocks() static] [hugh@veritas.com: fix hang] [hugh@veritas.com: ext2_new_blocks should reset the reservation window size] [hugh@veritas.com: ext2 balloc: fix off-by-one against rsv_end] [hugh@veritas.com: grp_goal 0 is a genuine goal (unlike -1), so ext2_try_to_allocate_with_rsv should treat it as such] [hugh@veritas.com: rbtree usage cleanup] [pbadari@us.ibm.com: Fix for ext2 reservation] [bunk@kernel.org: remove fs/ext2/balloc.c:reserve_blocks()] [hugh@veritas.com: ext2 balloc: use io_error label] Cc: "Martin J. Bligh" <mbligh@mbligh.org> Cc: Valerie Henson <val_henson@linux.intel.com> Cc: Mingming Cao <cmm@us.ibm.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Hugh Dickins <hugh@veritas.com> Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2006-12-07[PATCH] Remove superfluous lock_super() in extN xattr codeAndreas Gruenbacher1-4/+1
lock_super() is unnecessary for setting super-block feature flags. Use the provided *_SET_COMPAT_FEATURE() macros as well. Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-27[PATCH] fs: Conversions from kmalloc+memset to k(z|c)allocPanagiotis Issaris1-2/+1
Conversions from kmalloc+memset to kzalloc. Signed-off-by: Panagiotis Issaris <takis@issaris.org> Jffs2-bit-acked-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-17[PATCH] fix deadlock in ext2Peter Staubach1-2/+4
Fix a deadlock possible in the ext2 file system implementation. This deadlock occurs when a file is removed from an ext2 file system which was mounted with the "sync" mount option. The problem is that ext2_xattr_delete_inode() was invoking the routine, sync_dirty_buffer(), using a buffer head which was previously locked via lock_buffer(). The first thing that sync_dirty_buffer() does is to lock the buffer head that it was passed. It does this via lock_buffer(). Oops. The solution is to unlock the buffer head in ext2_xattr_delete_inode() before invoking sync_dirty_buffer(). This makes the code in ext2_xattr_delete_inode() obey the same locking rules as all other callers of sync_dirty_buffer() in the ext2 file system implementation. Signed-off-by: Peter Staubach <staubach@redhat.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-10[PATCH] remove ext2 xattr permission checksakpm@osdl.org1-4/+0
) From: Christoph Hellwig <hch@lst.de> remove checks now in the VFS Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-09[PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_semJes Sorensen1-1/+1
This patch converts the inode semaphore to a mutex. I have tested it on XFS and compiled as much as one can consider on an ia64. Anyway your luck with it might be different. Modified-by: Ingo Molnar <mingo@elte.hu> (finished the conversion) Signed-off-by: Jes Sorensen <jes@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2005-07-27[PATCH] mbcache: Remove unused mb_cache_shrink parameterAndreas Gruenbacher1-1/+1
The cache parameter to mb_cache_shrink isn't used. We may as well remove it. Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-16Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds1-0/+1043
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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