kernel/linux.git/fs/gfs2/dir.h, branch linux-7.1.y

gfs2: No longer use 'extern' in function declarations

2023-11-06T00:51:26+00:00

For non-static function declarations, external linkage is implied and the 'extern' keyword isn't needed. Some static checkers complain about the overuse of 'extern', so clean up all the function declarations. In addition, remove 'extern' from the definition of free_local_statfs_inodes(); it isn't needed there, either. Signed-off-by: Andreas Gruenbacher

gfs2: Delete an unnecessary check before brelse()

2019-09-04T18:22:17+00:00

The brelse() function tests whether its argument is NULL and then returns immediately. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. [The same applies to brelse() in gfs2_dir_no_add (which Coccinelle apparently missed), so fix that as well.] Signed-off-by: Markus Elfring Signed-off-by: Andreas Gruenbacher

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398

2019-06-05T15:37:12+00:00

Based on 1 normalized pattern(s): this copyrighted material is made available to anyone wishing to use modify copy or redistribute it subject to the terms and conditions of the gnu general public license version 2 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 44 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Reviewed-by: Kate Stewart Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190531081038.653000175@linutronix.de Signed-off-by: Greg Kroah-Hartman

GFS2: Make rename not save dirent location

2014-10-01T13:06:15+00:00

This patch fixes a regression in the patch "GFS2: Remember directory insert point", commit 2b47dad866d04f14c328f888ba5406057b8c7d33. The problem had to do with the rename function: The function found space for the new dirent, and remembered that location. But then the old dirent was removed, which often moved the eligible location for the renamed dirent. Putting the new dirent at the saved location caused file system corruption. This patch adds a new "save_loc" variable to struct gfs2_diradd. If 1, the dirent location is saved. If 0, the dirent location is not saved and the buffer_head is released as per previous behavior. Signed-off-by: Bob Peterson Signed-off-by: Steven Whitehouse

GFS2: Remember directory insert point

2014-01-06T12:49:43+00:00

When we look to see if there is enough space to add a dir entry without allocation, we have then been repeating the same search later when we do the actual insertion. This patch caches the details of the location in the gfs2_diradd structure, so that we do not have to repeat the search. This will provide a performance improvement which will be greater as the size of the directory increases. Signed-off-by: Steven Whitehouse

GFS2: Add directory addition info structure

2014-01-06T11:28:41+00:00

The intent is that this structure will hold the information required when adding entries to a directory (linking). To start with, it will contain only the number of blocks which are required to link the new entry into the directory. The current calculation returns either 0 or the maximim number of blocks that can ever be requested by such a transaction. The intent is that in a later patch, we can update the dir code to calculate this value more accurately. In addition further patches will also add further fields to the new structure to increase its utility. In addition this patch fixes a bug where the link used during inode creation was adding requesting too many blocks in some cases. This is harmless unless the fs is close to being full. Signed-off-by: Steven Whitehouse

Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-nmw

2013-07-02T16:41:18+00:00

Pull GFS2 updates from Steven Whitehouse: "There are a few bug fixes for various, mostly very minor corner cases, plus some interesting new features. The new features include atomic_open whose main benefit will be the reduction in locking overhead in case of combined lookup/create and open operations, sorting the log buffer lists by block number to improve the efficiency of AIL writeback, and aggressively issuing revokes in gfs2_log_flush to reduce overhead when dropping glocks." * git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-nmw: GFS2: Reserve journal space for quota change in do_grow GFS2: Fix fstrim boundary conditions GFS2: fix warning message GFS2: aggressively issue revokes in gfs2_log_flush GFS2: fix regression in dir_double_exhash GFS2: Add atomic_open support GFS2: Only do one directory search on create GFS2: fix error propagation in init_threads() GFS2: Remove no-op wrapper function GFS2: Cocci spatch "ptr_ret.spatch" GFS2: Eliminate gfs2_rg_lops GFS2: Sort buffer lists by inplace block number

[readdir] convert gfs2

2013-06-29T08:56:35+00:00

Signed-off-by: Al Viro

GFS2: Only do one directory search on create

2013-06-11T12:45:29+00:00

Creation of a new inode requires a directory search in order to ensure that we are not trying to create an inode with the same name as an existing one. This was hidden away inside the create_ok() function. In the case that there was an existing inode, and a lookup can be substituted for a create (which is the case with regular files when the O_EXCL flag is not in use) then we were doing a second lookup in order to return the inode. This patch merges these two lookups into one. This can be done by passing a flag to gfs2_dir_search() to tell it to just return -EEXIST in the cases where we don't actually want to look up the inode. Signed-off-by: Steven Whitehouse

GFS2: Add readahead to sequential directory traversal

2011-11-08T09:52:12+00:00

This patch adds read-ahead capability to GFS2's directory hash table management. It greatly improves performance for some directory operations. For example: In one of my file systems that has 1000 directories, each of which has 1000 files, time to execute a recursive ls (time ls -fR /mnt/gfs2 > /dev/null) was reduced from 2m2.814s on a stock kernel to 0m45.938s. Signed-off-by: Bob Peterson Signed-off-by: Steven Whitehouse