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History for barebox / fs / fs.c

2020-07-05	43902e5 Browse files » fs: free inodes we no longer need ... So far we freed the no longer needed inodes only at unmount time. Let's trust our reference counting a bit more and free them once the reference counter hits zero. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 5 Jul 2020
2020-07-05	6685d24 Browse files » fs: Make iput() accept NULL pointers ... Let iput() accept NULL pointers so that users do not have to test for it. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 5 Jul 2020
2020-05-14	45000aa Browse files » Merge branch 'for-next/misc' Sascha Hauer committed on 14 May 2020
2020-05-05	f398880 Browse files » fs: Fix inode size setting in ftruncate ... When changing a file size the size of the corresponding inode has to be changed as well. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 5 May 2020
2020-04-27	cd24f63 Browse files » treewide: remove references to CREDITS ... The CREDITS file was removed from barebox in 2015 by commit 6570288f2d97 ("Remove the CREDITS file"). Remove references to it from several files. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Uwe Kleine-König authored on 23 Apr 2020 Sascha Hauer committed on 27 Apr 2020
2020-02-14	6a1daf5 Browse files » fs: Introduce discard_range() ... discard_range() is a way to tell the lower layers that we are no longer interested in a data range of a file, so that the lower layers can discard the underlying data if desired. This is mainly designed to bypass the deficiencies of our block layer. We cache the block data in chunks of multiple KiB (16 currently) if we fall into the block layer with write requests smaller than that we have to read/modify/write a chunk. With the help of discard_range() code writing files to a raw block device can now discard the range the file will be written to. The block layer then no longer has to read the chunks first that are inside the discard range. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 14 Feb 2020
2019-10-14	dd11264 Browse files » chdir(): add LOOKUP_DIRECTORY flag to filename_lookup() ... This makes sure that automount points get handled even if the path doesn't end with a '/'. Signed-off-by: Robert Karszniewicz <r.karszniewicz@phytec.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Robert Karszniewicz authored on 18 Sep 2019 Sascha Hauer committed on 14 Oct 2019
2019-08-23	fe201c6 Browse files » fs: provide no_revalidate_d_ops for network file systems ... Networked file systems may wish to forego dentry caching altogether, so every lookup goes over the network and stale data is avoided. Provide a no_revalidate_d_ops helper object that does this. Signed-off-by: Ahmad Fatoum <ahmad@a3f.at> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Ahmad Fatoum authored on 22 Aug 2019 Sascha Hauer committed on 23 Aug 2019
2019-02-27	e48c549 Browse files » fs: Simplify fd to FILE lookup code ... Avoid a bit of repeating code by merging checking fd for correctness and fd to FILE lookup into a single routine and converting the rest of the code to use it. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Andrey Smirnov authored on 26 Feb 2019 Sascha Hauer committed on 27 Feb 2019
	27099b5 Browse files » fs: Drop unused code in fstat() ... Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Andrey Smirnov authored on 26 Feb 2019 Sascha Hauer committed on 27 Feb 2019
	fd52d8e Browse files » fs: Drop needless OOM check ... Drop needless OOM check since xzalloc() will never return NULL. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Andrey Smirnov authored on 26 Feb 2019 Sascha Hauer committed on 27 Feb 2019
2019-02-13	314ad8e Browse files » Merge branch 'for-next/lseek' Sascha Hauer committed on 13 Feb 2019
2019-02-06	20eea93 Browse files » fs: do not call truncate for FILE_SIZE_STREAM sized files ... open_and_lseek() increases the file size when the file is opened in write mode and scrolled past the files end. This fails badly on /dev/mem because loff_t which we use for the file size is signed variable, which is used as an unsigned variable in /dev/mem. To catch this case do not try to truncate FILE_SIZE_STREAM sized files. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 6 Feb 2019
2019-02-06	97e7c77 Browse files » fs: set errno in ftruncate() ... ftruncate needs to set errno correctly on error. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 6 Feb 2019
2019-02-04	d7c2384 Browse files » fs: Simplify new position calculation in lseek() ... All these checks are really testing is that resulting position is within [0; f->size] interval. Convert all of the custom checks into a signle one done after the switch statement to simplify the code. Note this change also disables the validity check for f->size == FILE_SIZE_STREAM and whence == SEEK_END, but lseek(stream_fd, offset, SEEK_END) wasn't a meaningful operation to begin with, so this shouldn't be a problem. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Andrey Smirnov authored on 29 Jan 2019 Sascha Hauer committed on 4 Feb 2019
	71cd983 Browse files » fs: Do not use IS_ERR_VALUE() to validate offset in lseek() ... On 32-bit systems, checking for IS_ERR_VALUE(pos) is not correct. Expanding that code we get (loff_t cast is added for clarity): (loff_t)pos >= (unsigned long)-MAX_ERRNO given that loff_t is a 64-bit signed value, any perfectly valid seek offset that is greater than 0xffffc000 will result in false positive. Moreso, as a part of fix introduced in e10efc5080 ("fs: fix memory access via /dev/mem for MIPS64") it doesn't really solve the problem completely on on 64-bit platforms, becuase it still leaves out a number of perfectly valid offsets (e.g. "md 0xffffffffffffff00" doesn't work) Undo the original change and convert the check to simply test if offset is negative. Changes neccessary to alllow access to end of 64-bit address space will be implemented in the follow-up patch. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Andrey Smirnov authored on 29 Jan 2019 Sascha Hauer committed on 4 Feb 2019
	0b80e3d Browse files » fs: devfs: Change .lseek callbacks to return 'int' ... Returning requested offset from .lseek() callback doesn't really give us any new information while bringing unnecessary complications. Change all .lseek() types (both in struct struct cdev_operations and in struct fs_driver_d) to return 'int' and adjust the rest of the codebase accordingly. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Andrey Smirnov authored on 29 Jan 2019 Sascha Hauer committed on 4 Feb 2019
2019-01-29	0c2431b Browse files » fs: Drop trivial .lseek() implementaitons in FS drivers ... There are no FS drivers that do not implement .lseek callback in the codebase, so there doesn't seem to exist a use-case where lseek() would return -ENOSYS due to fsdrv->lseek being NULL. At the same time a large number of FS drivers implement only the most basic "always succeeds" custom .lseek() hook. Change the code of lseek() to treat absense of .lseek() to mean that no special actions needs to be taken by FS driver and seek is always successful and drop all of the trivial .lseek() implementations. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Andrey Smirnov authored on 29 Jan 2019 Sascha Hauer committed on 29 Jan 2019
2019-01-29	c44997e Browse files » fs: Update FILE position in lseek() ... Instead on relying on driver callbacks to update 'pos' in FILE, do it as a part of lseek() code. This allows us to drop a bit of repeating code as well as making lseek() implementation consistent with write() and read(). Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Andrey Smirnov authored on 29 Jan 2019 Sascha Hauer committed on 29 Jan 2019
2019-01-16	246216c Browse files » treewide: Introduce MAP_FAILED and replace ad-hoc constants with it ... Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Andrey Smirnov authored on 12 Jan 2019 Sascha Hauer committed on 16 Jan 2019
2018-11-21	21fa1c3 Browse files » fs: fix possible null pointer dereference of base. ... we use base before checking if it is NULL Signed-off-by: Oleksij Rempel <linux@rempel-privat.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Oleksij Rempel authored on 20 Nov 2018 Sascha Hauer committed on 21 Nov 2018
2018-11-21	342b8dd Browse files » fs: closedir: remove uninitialized variable ret ... Signed-off-by: Oleksij Rempel <linux@rempel-privat.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Oleksij Rempel authored on 20 Nov 2018 Sascha Hauer committed on 21 Nov 2018
2018-11-09	227426f Browse files » Merge branch 'for-next/net-switch-mv88e6xxx' Sascha Hauer committed on 9 Nov 2018
2018-11-09	9a8f531 Browse files » Merge branch 'for-next/missing-prototypes' Sascha Hauer committed on 9 Nov 2018
2018-10-29	4e60154 Browse files » fs: implement d_revalidate ... d_revalidate is useful when filesystems change under the hood of the fs layer. This can happen with network filesystems or with devfs. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 29 Oct 2018
2018-10-19	1abb4d5 Browse files » fs: Make locally used functions static ... Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 19 Oct 2018
2018-10-18	0568376 Browse files » drivers: Introduce dev_set_name() ... Introduce dev_set_name() in order to hide implementation details of setting device's name so it'd be easier to change it. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Andrey Smirnov authored on 16 Oct 2018 Sascha Hauer committed on 18 Oct 2018
2018-10-08	3519757 Browse files » fs: implement clear_nlink and set_nlink ... Implement clear_nlink and set_nlink and remove the private versions from UBIFS. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 8 Oct 2018
	22d8660 Browse files » fs: implement iget_locked and iget_failed ... Implement in fs core rather than using a private version in UBIFS. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 8 Oct 2018
	46ade6e Browse files » fs: implement file_inode ... To ease code porting from Linux Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 8 Oct 2018