223df0161f
Add support for the FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE mode of fallocate(2). Mimic the behavior of other native file systems such as ext4 in cases where the file might be extended. If the offset is beyond the end of the file, return success without changing the file. If the extent of the punched hole would extend the file, only the existing tail of the file is punched. Add the zfs_zero_partial_page() function, modeled after update_page(), to handle zeroing partial pages in a hole-punching operation. It must be used under a range lock for the requested region in order that the ARC and page cache stay in sync. Move the existing page cache truncation via truncate_setsize() into zfs_freesp() for better source structure compatibility with upstream code. Add page cache truncation to zfs_freesp() and zfs_free_range() to handle hole punching. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Tim Chase <tim@chase2k.com> Closes #2619 |
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| avl | ||
| nvpair | ||
| unicode | ||
| zcommon | ||
| zfs | ||
| zpios | ||
| .gitignore | ||
| Makefile.in | ||