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History for barebox / fs / ramfs.c

2020-07-05	5edb9f0 Browse files » fs: ramfs: Implement memmap ... When an inode only has a single chunk then we can support memmap for it. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 5 Jul 2020
	b9ce401 Browse files » fs: ramfs: Use dynamically sized chunks ... This changes the way ramfs stores its data. So far we used equally sized chunks, this patch changes it to use chunks in a size that fits our needs. The chunks are always allocated in the size they are needed for the current truncation. Only if we fail to allocate all desired memory at once we fall back to allocating smaller chunks. Together with using the generic list implementation this results in smaller code and has the advantage that many image files end up being contiguously in memory and thus we can provide a memmap for them. Files will end up contiguously in memory when they are first created, then truncated to the final size and then filled up with data. This is something which is normally easily achievable when desired. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 5 Jul 2020
	925f7bb Browse files » fs: ramfs: Drop dead code ... Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 5 Jul 2020
	5e085f7 Browse files » fs: ramfs: Return -ENOSPC ... When ramfs fails to allocate more memory then returning -ENOSPC is more appropriate then -ENOMEM. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 5 Jul 2020
	d0d073f Browse files » fs: Add destroy_inode callbacks to filesystems ... Several filesystems rely on the default function which frees the struct inode * rather than the filesystem specific inode which the inode is embedded in. This works because the inode is the first element in the filesystem specific inode. Let's not depend on this behaviour and for clarity add the destroy_inode callbacks to all filesystems. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 5 Jul 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
2019-03-13	a54a87c Browse files » fs: ramfs: Drop unnecessary check in ramfs_mknod() ... There's already an early exit statement triggered by "inode" being NULL. Drop an extra check that will always be true. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Andrey Smirnov authored on 12 Mar 2019 Sascha Hauer committed on 13 Mar 2019
	956db27 Browse files » fs: ramfs: Drop unused 'chunks' conter ... This variable doesn't appear to be used anywhere in the code. Drop it. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Andrey Smirnov authored on 12 Mar 2019 Sascha Hauer committed on 13 Mar 2019
	0898275 Browse files » fs: ramfs: Drop unused 'handle' filed from struct ramfs_inode ... There are no users of this field in the code. Drop it. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Andrey Smirnov authored on 12 Mar 2019 Sascha Hauer committed on 13 Mar 2019
2019-02-27	b8ece19 Browse files » fs: ramfs: 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
2019-02-06	d112c7a Browse files » fs: let truncate take a loff_t argument ... loff_t is the correct type for file sizes. Use it to allow to truncate to sizes bigger than 32bit. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 6 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
2018-10-08	383b934 Browse files » fs: improve ramfs_truncate speed ... During sequential writes into single file, fs layer is consequently calling ramfs_truncate() function. When file size grows ramfs_truncate() takes more and more time to complete, due to interations through all already written data chunks. As an example loading ~450M image using usb fastboot protocol took over 500s to complete. Use ramfs_find_chunk() function to search for last chunk of data in ramfs_truncate() implementation, which saves a lot of loop iterations. As a result loading ~450M image using usb fastboot protocol takes around 25s now. Tested-by: Maciej Zagrabski <m.zagrabski@grinn-global.com> Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Marcin Niestroj authored on 26 Sep 2018 Sascha Hauer committed on 8 Oct 2018
2018-09-27	5154902 Browse files » fs: ramfs: make chunk counting in truncate() better readable ... In ramfs_truncate() "newchunks" denotes the number of chunks we want to have after the call. We decrease that number while iterating over the existing chunks and decrease it further with every newly allocated chunk until "newchunks" is zero. This is a bit hard to read. Instead we drop the decreasing while iterating over existing chunks and increase "oldchunks" while allocating until it reaches "newchunks". This is mainly done to make the next patch easier. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 27 Sep 2018
2018-09-26	a451447 Browse files » fs: ramfs: Free data when file is unlinked ... Since the switch to dentry cache implementation the memory is no longer freed when a file in ramfs is deleted. Fix this. Fixes: b283b72639 ("fs: ramfs: Switch to dentry cache implementation") Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 26 Sep 2018
2018-08-13	5c7690f Browse files » Merge branch 'for-next/memcmds' Sascha Hauer committed on 13 Aug 2018
2018-08-10	90245eb Browse files » fs: ramfs: get chunks zero initialized ... Initialize new chunks to zero, otherwise a ->truncate call may result in uninitialized data in files. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 10 Aug 2018
2018-07-11	b283b72 Browse files » fs: ramfs: Switch to dentry cache implementation ... Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 11 Jul 2018
2015-10-01	e69b95f Browse files » fs: syntax fix in ramfs.c ... Signed-off-by: Stefan Christ <s.christ@phytec.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Stefan Christ authored on 30 Sep 2015 Sascha Hauer committed on 1 Oct 2015
2015-07-02	177cab0 Browse files » treewide: fix 'new blank line at EOF' formatting error ... Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Antony Pavlov authored on 30 Jun 2015 Sascha Hauer committed on 2 Jul 2015
2015-03-09	6977292 Browse files » fs: rename inode member of struct filep to priv ... Because that's what it is. 'inode' will become confusing once we support real inodes. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 9 Mar 2015
2012-09-17	77322aa Browse files » Treewide: remove address of the Free Software Foundation ... The FSF address has changed in the past. Instead of updating it each time the address changes, just drop it completely treewide. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 17 Sep 2012
2012-09-04	ad6c28a Browse files » ramfs: add symlink and readlink support ... Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Jean-Christophe PLAGNIOL-VILLARD committed on 4 Sep 2012
2012-06-30	3e50382 Browse files » use loff_t for file offsets ... This is a first step for 64bit file support: Make the file sizes/offsets 64bit. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 30 Jun 2012
2012-05-16	011801d Browse files » ramfs: rember last accessed chunk ... Writing big files takes longer and longer because of the chunk list By storing a pointer of the recent used chunk in the inode, access times are improved. Testet on with tftp 10M: OMAP4 chunk size 4096: 12244ms 8192: 4239ms patched 2647ms 2785ms i.MX35 chunk size 8192: 7225ms patched 2691ms No impact on much smaller files seen Signed-off-by: Jan Weitzel <j.weitzel@phytec.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Jan Weitzel authored on 16 May 2012 Sascha Hauer committed on 16 May 2012
2012-02-25	3a92711 Browse files » fs: get fs device using container_of ... This reduces the usage of dev->type_data. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 25 Feb 2012
2011-12-05	14273e7 Browse files » ramfs: increase chunk size to 8192 bytes ... dlmalloc seems to work more efficient with this chunk size. Copying a bigger file (3MB) takes 271ms vs. 125ms on a i.MX27 board. Even bigger chunk sizes do not further improve performance. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 5 Dec 2011
2011-04-11	5c44e3a Browse files » fs: remove unused field 'type' from struct fs_driver_d ... Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 11 Apr 2011
2011-03-10	c28810e Browse files » ramfs: increase chunk size to 4 kbyte ... This greatly increases speed on ramfs. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 10 Mar 2011